Skip to content
Vet RanchVet Ranch
  • Home
  • Pet Animals
    • Dog
      • Dog Crate
      • Dog House
      • Dog Nail
      • Dog Shampoo
      • Dog Bed
      • Dog Harness
      • Dog Door
      • Dog Muzzles
      • Dog Car Seat
      • Dog Feeder
      • Dog Harness
      • Dog Kennel
      • Dog Pen
    • Cat
      • Cat Carrier
      • Cat Clipper
      • Cat Couch
      • Cat exercise wheel
      • Cat Litter
      • Cat Litter Box
      • Cat scratching post
      • Cat stroller
      • Cat Tracker
      • Cat Tree
      • Cat Vacuum
    • Bird
      • Bird Camera Feeder
      • Bird Stand
      • Bird Bath
      • Bird Cage
      • Bird Crate
      • Bird Feeder
      • Bird Seed
    • Rabbit
      • Rabbit Cage
      • Rabbit Hutch
    • Fish
      • Fish Tank
      • Fish Aquarium
    • Pet Stroller
  • Knowledge
    • Best Product
    • Review
    • Blog
  • About Us
  • Contact Us
  • Write for Us
Vet RanchVet Ranch
  • Home » 
  • Cat Litter Box » 
  • Wirecutter Litter Box

Wirecutter Litter Box

Arthur Crowley October 27, 2023

If you have a feline, a litter box is a must. From traditional, covered, and also self-cleaning, feline can been available in lots of shapes and sizes. Nonetheless, finding the appropriate one that matches you and your feline pal can be frustrating. That’s why we’ve created the ultimate guide to feline can. In this message, we’ll explain the different kinds of litter boxes, their attributes, and also exactly how to select the best one for your cat.

Contents
  1. Wirecutter Litter Box – Complete Evaluation As Well As Buying Guide
    1. Stainless Steel Litter Box | XL Enclosed Cat Litter Boxs with Lid for Big Cats | High Sided, Anti-Urine Leakage | Non-Stick Bottom & Includes Litter Mat & Metal Scoop
      1. Features
    2. Kirecoo Stainless Steel Cat Litter Box XL- Metal High Sided Cat Pan, Large Stainless Steel Box, Indoor Litter Tray, Non Stick, No Smell, Easy to Clean, Pet Toilet Supplies for Kitten, Kitty, Rabbit
      1. Features
    3. Modkat® Flip Litter Box, Front-Entry, Full Height Seamless Base, Reusable Litter Liner, Sifting Litter Scoop, 2X Bamboo Charcoal Filters
      1. Features
    4. Holintan Stainless Steel Litter Box, 18"x14"x6"(Height) Medium Metal Cat Litter Box Easy Clean, Non Stick Litterbox No Smell for Cats or Kitty, Rabbits
      1. Features
    5. Prodigen Stainless Steel Cat Litter Box with Lid High Wall Sides Enclosure, Non-Sticky, Anti-Leakage, Easy Cleaning, with Cat Mat & Metal Scoop, 19.6" L x 14" W x 12" H
      1. Features
    6. Vivifying Stainless Steel Litter Box, XL Side Entry Extra Large Litter Box with Lid for Big Cats & Kitty, Removable Enclosed Metal Cat Pan with High Sided Enclosure, Scoop, Mat, Footboard (Black)
      1. Features
    7. Yangbaga Extra Large Stainless Steel Litter Box, Leak Proof 12 Inches High Sides for Urine & Litter Trapping, Easy Entry for Kittens, Older Cats,Non-Stick,Non-Slip,No Sharp Edges
      1. Features
  2. Conventional Litter Boxes
  3. Covered Trash Boxes
  4. Self-Cleaning Clutter Boxes
  5. Non Reusable Litter Boxes
  6. Picking the most effective Can
  7. Conclusion:

Wirecutter Litter Box – Complete Evaluation As Well As Buying Guide

Check out our top products that you can purchase:

1
Stainless Steel Litter Box | XL Enclosed Cat Litter Boxs with Lid for Big Cats | High Sided, Anti-Urine Leakage | Non-Stick Bottom & Includes Litter Mat & Metal Scoop
Stainless Steel Litter Box | XL Enclosed Cat Litter Boxs with Lid for Big Cats | High Sided,...
BUY NOW Amazon.com
9.9
BUY NOW
Amazon.com
2
Kirecoo Stainless Steel Cat Litter Box XL- Metal High Sided Cat Pan, Large Stainless Steel Box, Indoor Litter Tray, Non Stick, No Smell, Easy to Clean, Pet Toilet Supplies for Kitten, Kitty, Rabbit
Kirecoo Stainless Steel Cat Litter Box XL- Metal High Sided Cat Pan, Large Stainless Steel Box,...
BUY NOW Amazon.com
9.8
BUY NOW
Amazon.com
3
Modkat® Flip Litter Box, Front-Entry, Full Height Seamless Base, Reusable Litter Liner, Sifting Litter Scoop, 2X Bamboo Charcoal Filters
High quality
Modkat® Flip Litter Box, Front-Entry, Full Height Seamless Base, Reusable Litter Liner, Sifting...
BUY NOW Amazon.com
9.4
BUY NOW
Amazon.com
4
Holintan Stainless Steel Litter Box, 18"x14"x6"(Height) Medium Metal Cat Litter Box Easy Clean, Non Stick Litterbox No Smell for Cats or Kitty, Rabbits
Holintan Stainless Steel Litter Box, 18"x14"x6"(Height) Medium Metal Cat Litter Box Easy Clean,...
BUY NOW Amazon.com
9
BUY NOW
Amazon.com
5
Prodigen Stainless Steel Cat Litter Box with Lid High Wall Sides Enclosure, Non-Sticky, Anti-Leakage, Easy Cleaning, with Cat Mat & Metal Scoop, 19.6" L x 14" W x 12" H
Prodigen Stainless Steel Cat Litter Box with Lid High Wall Sides Enclosure, Non-Sticky,...
BUY NOW Amazon.com
8.2
BUY NOW
Amazon.com
6
Vivifying Stainless Steel Litter Box, XL Side Entry Extra Large Litter Box with Lid for Big Cats & Kitty, Removable Enclosed Metal Cat Pan with High Sided Enclosure, Scoop, Mat, Footboard (Black)
Vivifying Stainless Steel Litter Box, XL Side Entry Extra Large Litter Box with Lid for Big Cats...
BUY NOW Amazon.com
7.5
BUY NOW
Amazon.com
7
Yangbaga Extra Large Stainless Steel Litter Box, Leak Proof 12 Inches High Sides for Urine & Litter Trapping, Easy Entry for Kittens, Older Cats,Non-Stick,Non-Slip,No Sharp Edges
Yangbaga Extra Large Stainless Steel Litter Box, Leak Proof 12 Inches High Sides for Urine &...
BUY NOW Amazon.com
7.2
BUY NOW
Amazon.com

*Note: The score is based on our AI score (Editor’s choice and rating).
Stainless Steel Litter Box | XL Enclosed Cat Litter Boxs with Lid for Big Cats | High Sided, Anti-Urine Leakage | Non-Stick Bottom & Includes Litter Mat & Metal Scoop

Stainless Steel Litter Box | XL Enclosed Cat Litter Boxs with Lid for Big Cats | High Sided, Anti-Urine Leakage | Non-Stick Bottom & Includes Litter Mat & Metal Scoop

$75.99
$50.99
 in stock
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • ENCLOSED DESIGN: The cat litter box with top cover is designed to prevent litter scatter and provide a private space for your furry friends. The cat litter box is made of high-quality stainless steel, which is long-lasting, rust-proof, and easy to clean. The sturdy construction ensures that the box can withstand the weight of your cats and provide long-term use.
  • EXCLUSIVE DESIGN PATENT:The 30° angled litter filter plate in the AIPERRO litter box provides a specific advantage in preventing cats from easily taking litter out of the box. This can be particularly beneficial in keeping the surrounding area clean and reducing the need for constant cleanup.
  • XL SIZE: The stainless steel cat litter box is extra large, measuring 23.2 x 15.7 x 12.2 inches. It is suitable for cats of all sizes, including large and giant breeds. The high sides prevent litter from spilling out, making it easy to clean and maintain.
  • ANTI-URINE LEAKAGE: The cat litter box is designed with a leak-proof design, including a sealed bottom and a curved shape. Superior sealing - ensures liquids are contained within the stainless steel cat litter box, keeps your home clean and no odor.
  • PERFECT COMBINATION: Stainless steel litter box comes with a cat litter mat, which provides a comfortable surface for your cats to step on. It also includes an all-metal litter scoop, making it easy to clean the litter box thoroughly.
Kirecoo Stainless Steel Cat Litter Box XL- Metal High Sided Cat Pan, Large Stainless Steel Box, Indoor Litter Tray, Non Stick, No Smell, Easy to Clean, Pet Toilet Supplies for Kitten, Kitty, Rabbit

Kirecoo Stainless Steel Cat Litter Box XL- Metal High Sided Cat Pan, Large Stainless Steel Box, Indoor Litter Tray, Non Stick, No Smell, Easy to Clean, Pet Toilet Supplies for Kitten, Kitty, Rabbit

$38.99
$36.99
 in stock
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • Stainless Steel Material and Open Top: Kirecoo cat litter box is made from high-quality stainless steel. Unlike plastic litter box, this litter pan delivers good performance and sturdy. Large stainless steel litter box xl is proof against scratches and dents during use and do not absorb or retain stinky smell. The open-top design of the large top entry litter box is ideal for cats that may feel too anxious to enter an enclosed litter box, as well as for those who prefer open air of an space.
  • Extra Large Size, High Sides: Kirecoo large cat litter box measuring 23.43*15.55*5.7 inch, provides a spacious interior allowing cats to comfortably finish their private activities. With 5.7 inch tall sides, the extra large box effectively contains litter, reducing spillage and making it accessible for medium cats, multiple cats. Litter box also has ample room for cats to shake off excess litter inside. Large litter box is particularly suitable for cats that tend to urinate high or kick litter.
  • No Stinky Smell, Non Sticky, Easy to Clean: Kirecoo large metal litter box does not hold stinky smell. Its smooth surface is comfortable to the touch for both you and your cats. Non sticky litter pan prevents litter waste from sticking to the sides and make for waste to more easily fall off. As a result, litter waste will naturally slide and accumulate at the bottom, making it extremely easy to clean and dry fast. Choosing large stainless steel cat litter box for indoor is a better option.
  • Smooth Rim and Rounded Edges: Kirecoo extra large litter box featuring integrally smooth rim and rounded edges, ensuring comfortable and easy picked up and hold without the risk of injuring your hand. This large kitten litter box supplies not only add stability and strength when filling with heavy litter, but also enhances effortless scooping of cat litter. The Rounded edges design of the cat litter tray provides a more comfortably and safely experience to both pet owners and kitty.
  • Versatility in Use: Kirecoo xl large stainless steel litter box is perfect for a variety of pets size, including big adult cats, small kitty, rabbits, ferrets, snakes, and more. No more worries about your rabbit ingesting plastic! In addition to being cat toilet, this big litter box also can serve as a bathing tub for pets, metal storage container, and more. This versatile steel steel box satisfy the different needs.
Modkat® Flip Litter Box, Front-Entry, Full Height Seamless Base, Reusable Litter Liner, Sifting Litter Scoop, 2X Bamboo Charcoal Filters

Modkat® Flip Litter Box, Front-Entry, Full Height Seamless Base, Reusable Litter Liner, Sifting Litter Scoop, 2X Bamboo Charcoal Filters

$99.95  in stock
2 new from $81.66
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • AWARD-WINNING DESIGN: The New York Times Wirecutter named Modkat Flip Litter Box the “Upgrade Pick” for Best Cat Litter Boxes 2025, praising its modern looks and easy cleaning.
  • 3-POSITION LID: Say goodbye to clumsy latching hoods. Flip opens easily with one hand and offers three lid positions: fully closed for privacy, half-open for a view, or fully removed for skittish cats.
  • NO LEAKS OR SCATTER: The full-height, seamless base prevents leaks and stops litter scatter. It’s ideal for side-peeing or enthusiastic diggers. Keep the mess where it belongs.
  • ECO-FRIENDLY REUSABLE LINER: Each Modkat liner lasts up to 3 months and fits perfectly inside The Modkat Flip Litter Box. Look for the official Modkat label to ensure fit and performance. Replacement Modkat Liner (Type-F) 3-packs sold separately.
  • BONUS TOY INCLUDED: Every Modkat litter box comes with a branded ball and packaging that transforms into an interactive cat toy.
Holintan Stainless Steel Litter Box, 18"x14"x6"(Height) Medium Metal Cat Litter Box Easy Clean, Non Stick Litterbox No Smell for Cats or Kitty, Rabbits

Holintan Stainless Steel Litter Box, 18"x14"x6"(Height) Medium Metal Cat Litter Box Easy Clean, Non Stick Litterbox No Smell for Cats or Kitty, Rabbits

$22.99  in stock
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • Keep Smells to a Minimum: This stainless steel litter box doesn't get scratched or absorb odors, helps get rid of the smell
  • Medium Kitty Litter Box Accurate Size: 17.7"x13.7"x6"(L*W*H), normally high enough to prevent litters and pee from coming out,suitable for small to medium cats or rabbits
  • Easy to Clean and Dry Fast: No coating, non-stick stainless makes cleaning the cat litter box so much easier and dry faster
  • Long-lasting Metal Litter Box: Made of heavy duty stainless steel, not easily deformed and rust-resistant means no more frequent replacements
  • Suitable for Rabbits too: No worry about your rabbits or rodents ingesting plastic after switching to metal cat/rabbit litter box
Prodigen Stainless Steel Cat Litter Box with Lid High Wall Sides Enclosure, Non-Sticky, Anti-Leakage, Easy Cleaning, with Cat Mat & Metal Scoop, 19.6" L x 14" W x 12" H

Prodigen Stainless Steel Cat Litter Box with Lid High Wall Sides Enclosure, Non-Sticky, Anti-Leakage, Easy Cleaning, with Cat Mat & Metal Scoop, 19.6" L x 14" W x 12" H

$43.19
$38.49
 in stock
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • 【Durable Stainless Steel Material】This stainless steel litter box with lid is not only sturdy and durable but features a specially treated surface that is smooth and delicate. It is not prone to accumulating litter or dirt and is resistant to deep scratches. Even after long-term use, it remains as good as new
  • 【Easy to Clean】With just a quick wipe with a wet cloth, you can quickly remove litter residue and odors without needing to scrub hard. Its odor-resistant properties ensure that your home remains fresh and natural
  • 【Contain Litter Spread】Equipped with an anti-slip pad at the bottom, our stainless steel litter box with lid provides stability and prevents movement even on smooth floors, ensuring safety for your cat during use. Additionally, the cleverly designed litter mat can effectively filter out excess litter, reducing ground contamination and keeping your home environment clean and tidy
  • 【Large Capacity】With its large size, this stainless steel litter box provides ample space for cats to use. The splash guard is designed reasonably with a moderate height, effectively preventing litter from during use and keeping the surrounding area clean. Whether it's an energetic kitten or a larger adult cat, this stainless steel litter box can handle it with ease
  • 【Simple Installation】The installation process of this stainless steel litter box is simple and quick, requiring no complex tools and can be easily completed. When not in use, it can be easily dismantled and stored in a corner or closet, saving space
Vivifying Stainless Steel Litter Box, XL Side Entry Extra Large Litter Box with Lid for Big Cats & Kitty, Removable Enclosed Metal Cat Pan with High Sided Enclosure, Scoop, Mat, Footboard (Black)

Vivifying Stainless Steel Litter Box, XL Side Entry Extra Large Litter Box with Lid for Big Cats & Kitty, Removable Enclosed Metal Cat Pan with High Sided Enclosure, Scoop, Mat, Footboard (Black)

$85.99
$69.99
 in stock
2 used from $62.99
Free shipping
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • XL SIZE FOR CATS UP TO 16LBS - This stainless steel cat litter box measures 23.6 x 15.7 x 15.55 inches, providing ample space for cats. The 5.9-inch high sides and 3.75-inch top shield offer double protection, effectively preventing litter scatter. Please keep in mind the space it will occupy before ordering
  • THREE VERSATILE MODES - Our extra large litter box offers three modes: fully enclosed for maximum odor control to keep your home fresh; open door for added privacy and visibility, helping cats adjust to the new box; and semi-enclosed for optimal airflow and easy cleaning, especially for cats wearing collars
  • PREMIUM STAINLESS STEEL - Built with thickened stainless steel, this litter box is rust-resistant, scratch-proof, durable and long-lasting. It helps reduce odors more effectively than plastic alternativess, keeping the space fresh. The box holds up to 110 lbs and lasts 3-5 years, reducing the need for frequent replacements
  • EASY-TO-CLEAN DESIGN - The smooth stainless steel surface makes it simple to rinse and wipe down. Its modular design allows you to lift the metal litter pan quickly for cleaning, without having to move other parts. The removable folding door further simplifies daily cleaning, making litter maintenance a breeze
  • ALL-INCLUSIVE ACCESSORIES - Our package includes a stainless steel litter box, scoop, footboard, honeycomb mat, slip-resistant pads, and an instruction manual. The footboard helps kittens and seniors access the box, while the double-layer honeycomb mat traps stray litter, ensuring a clean floor
Yangbaga Extra Large Stainless Steel Litter Box, Leak Proof 12 Inches High Sides for Urine & Litter Trapping, Easy Entry for Kittens, Older Cats,Non-Stick,Non-Slip,No Sharp Edges

Yangbaga Extra Large Stainless Steel Litter Box, Leak Proof 12 Inches High Sides for Urine & Litter Trapping, Easy Entry for Kittens, Older Cats,Non-Stick,Non-Slip,No Sharp Edges

$109.99
$79.99
 in stock
BUY NOW
Amazon.com
as of September 10, 2025 11:51 am

Features

  • Seamless 12 Inches High Sides --- Built to last one piece stainless steel litter box with no seam for urine to leak or to trap litter.
  • Comfy Enough for Cats to Use and Human to Scoop --- 24’’x16’’x12’’ provides enough space for cats to turn around in the litter box easily. And no obstacles on the sides or top of the litter box which allows you to do the scooping with ease.
  • NO Sharp Edges --- We have all edges rolled inside so you or your cat won’t get hurt while using, moving or cleaning.
  • U-shaped Easy Entry --- The 6 inches high entry allows both kittens and older cats with arthritis to get in or out easily.
  • Stainless steel is the answer when it comes to choosing a proper litter box. The durability alone makes it serve for years. The non-stick surface helps significantly when scooping and it doesn’t absorb odor which is good for your daily life.

Conventional Litter Boxes


Conventional can are the most usual sort of can. They come in differing sizes to fit various felines. They are open, so it’s simple to see and cleanse the trash. Typical can are economical, as well as you can discover one in a lot of pet shops. Nevertheless, they don’t offer much personal privacy, and your feline might toss trash out of package, leaving a mess.

Covered Trash Boxes


Covered litter boxes include a cover that offers privacy for your pet cat. They come in various dimensions and with various attributes. Some have a flap door that enables very easy access for your cat. Covered can can minimize the mess since the clutter is consisted of. Nonetheless, they can be odor-trapped, and your cat might not such as using them because of the lack of air flow.

Self-Cleaning Clutter Boxes


Self-cleaning litter boxes are ending up being more prominent since they use a convenient alternative. They work by cleaning the trash instantly. Some use sensing units to spot when your pet cat has utilized package, while others service a timed cycle. Self-cleaning can lower smells and also are convenient for busy pet proprietors. However, they are extra expensive, as well as some felines may be scared by the sound they make.

Non Reusable Litter Boxes


Non reusable litter boxes are an excellent option for traveling with your pet cat. They are constructed from cardboard as well as include a can that you can use and also throw away after your journey. Disposable litter boxes are lightweight, convenient, and also don’t call for cleansing. Nonetheless, they are not ideal for long-term usage, and your cat may locate them much less comfortable than various other sorts of litter boxes.

Picking the most effective Can


Choosing the very best litter box for your feline relies on a number of factors. Initially, consider your feline’s size as well as just how much space you have in your home. If you have a small apartment, a self-cleaning can may be as well loud. Then consider your pet cat’s age as well as any type of health and wellness issues. Older pet cats might favor a can with a lower rim, while felines with flexibility problems may require a larger litter box. Finally, consider your budget plan and also just how typically you can clean the can.

Conclusion:

Choosing the ideal litter box for your feline can make a significant difference in their day-to-day practices. A litter box that is also little, as well noisy, or also stinky can cause troubles for both you and your pet cat. By recognizing the various types of can and their functions, you can make an informed decision that matches both you as well as your feline buddy. Keep in mind to consistently cleanse the can, give fresh litter, as well as observe your feline’s actions to guarantee they are comfortable and also healthy.

Share
facebookShare on FacebooktwitterShare on TwitterpinterestShare on Pinterest
linkedinShare on LinkedinvkShare on VkredditShare on ReddittumblrShare on TumblrviadeoShare on ViadeobufferShare on BufferpocketShare on PocketwhatsappShare on WhatsappviberShare on ViberemailShare on EmailskypeShare on SkypediggShare on DiggmyspaceShare on MyspacebloggerShare on Blogger YahooMailShare on Yahoo mailtelegramShare on TelegramMessengerShare on Facebook Messenger gmailShare on GmailamazonShare on AmazonSMSShare on SMS
Post navigation
Previous post

Drymate Cat Litter Mat

Next post

Cat Litter Wood Pellets Tesco

Arthur Crowley

Arthur Crowley

To provide you with the expert assistance you need, Vet Ranch with licensed veterinarians can answer your health-related pet issues.

For the purpose of sharing knowledge with each other, we have jointly created this website, where you can get useful information from us and also where we expand our knowledge through your comments from you.

Related Posts

Wirecutter Litter Box

Waterproof Litter Box Enclosure

Wirecutter Litter Box

Unipaws Cat Litter Box Enclosure

Wirecutter Litter Box

Litter Box Furniture White

Wirecutter Litter Box

Cat Litter Box Furniture Wayfair

Wirecutter Litter Box

Small Litter Box Furniture

Wirecutter Litter Box

White Litter Box Furniture

Wirecutter Litter Box

Small Cat Litter Box Furniture

Wirecutter Litter Box

Wayfair Litter Box Furniture

Affiliate disclaimer

Vet Ranch (vetranch.org) is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc, or its affiliates.

Affiliate Disclaimer

Vet Ranch (vetranch.org) is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Amazon and the Amazon logo are trademarks of Amazon.com, Inc, or its affiliates.

Category

Best Product

Review

Blog

Page

  • About Us
  • Contact Us
  • Affiliate Disclaimer
  • Privacy Policy

Follow us on social

VET RANCH LOGO
FacebookFacebookTwitterInstagramYoutubeYoutube
Copyright © 2025 Vet Ranch
Your privacy

By selecting "Accept all cookies," you consent to Vetranch storing cookies on your device and disclosing information in accordance with our Privacy policy

Menu
  • Home
  • Pet Animals
    • Dog
      • Dog Crate
      • Dog House
      • Dog Nail
      • Dog Shampoo
      • Dog Bed
      • Dog Harness
      • Dog Door
      • Dog Muzzles
      • Dog Car Seat
      • Dog Feeder
      • Dog Harness
      • Dog Kennel
      • Dog Pen
    • Cat
      • Cat Carrier
      • Cat Clipper
      • Cat Couch
      • Cat exercise wheel
      • Cat Litter
      • Cat Litter Box
      • Cat scratching post
      • Cat stroller
      • Cat Tracker
      • Cat Tree
      • Cat Vacuum
    • Bird
      • Bird Camera Feeder
      • Bird Stand
      • Bird Bath
      • Bird Cage
      • Bird Crate
      • Bird Feeder
      • Bird Seed
    • Rabbit
      • Rabbit Cage
      • Rabbit Hutch
    • Fish
      • Fish Tank
      • Fish Aquarium
    • Pet Stroller
  • Knowledge
    • Best Product
    • Review
    • Blog
  • About Us
  • Contact Us
  • Write for Us
FacebookTwitterPinterest