The best extra small litter box depends on your pet’s size and how much room it needs to turn around. The Petmate Basic Small Pan is a practical choice for kittens needing a simple open box, while the 3-piece mini set is better for very small pets or travel. A five-pack suits homes with several small animals. The medium Petmate pan offers more room, and the automatic model is an alternative for buyers prioritizing self-cleaning over a compact footprint.
| Product | Best For | Listed Size or Feature |
|---|---|---|
| Petmate Basic Open Plastic Cat Litter Pan | Everyday kitten use | 14 x 10.5 inches |
| 3-Piece Kitten Litter Box Set | Very small pets and travel | About 9.65 x 7.28 inches |
| Petmate Open Cat Litter Box, Medium | Pets needing extra space | 16 x 12 inches |
| Automatic Open-Top Litter Box | Self-cleaning convenience | Open-top; app control |
| 5-Piece Small Litter Box Set | Multiple small pets | 13.9 x 9.8 inches |
Petmate Basic Small Open Litter Pan

The Petmate Basic is a straightforward extra small litter box for kittens or small cats. Its listed dimensions are 14 x 10.5 inches. The open top gives pets easy access, and the wide base and rim are designed to help contain litter and make the pan easier to lift.
Best for: Kitten owners who want a simple, open plastic pan with defined dimensions. It was selected for its compact footprint and practical design. Limitation: Its size may not provide enough room for a larger cat to turn comfortably, so check your pet’s needs before choosing it.
Three-Piece Mini Kitten Litter Box Set

Each tray measures about 9.65 x 7.28 x 0.98 inches, making this the smallest listed option. The low-entry design is intended for kittens, and the product is also described for small animals such as rabbits, hamsters, and chinchillas. Three trays in different colors can be useful for separating pets or placing pans in more than one location.
Best for: Very small pets, short-term travel, or buyers who need several compact trays. It was selected because its listed footprint is smaller than the other pans. Limitation: The shallow, small tray may not suit pets that need more room or use deeper litter; the listing also suggests securing it to reduce the chance of it shifting.
Petmate Medium Open Cat Litter Box

This open Petmate pan measures 16 x 12 inches, making it larger than the small Petmate model. Its wide base is intended to help keep litter contained, and a rim around the sides makes the pan easier to lift. The open design can be easier for kittens to enter than a covered box.
Best for: Buyers looking for a compact pan but who want more room than the extra small options provide. It was included as a useful size comparison for growing kittens or small cats. Limitation: At 16 x 12 inches, it is not the best match when the priority is the smallest possible litter-box footprint.
Open-Top Automatic Self-Cleaning Litter Box

This automatic model prioritizes cleaning convenience rather than an extra small footprint. Listed features include app control over 2.4 GHz Wi-Fi, one-touch cleaning, a large waste bin, and infrared and Hall effect sensors designed to stop operation when a cat enters or makes contact. Its open-top entrance measures 15 x 16.7 inches.
Best for: Buyers who want app-assisted, automatic cleaning and have room for a larger unit. It was selected as a feature-rich alternative in the provided product list. Limitation: The listed entrance dimensions and automatic design make it a poor choice for shoppers specifically seeking a tiny litter pan.
Five-Piece Small Plastic Litter Box Set

Each of the five open pans measures 13.9 x 9.8 x 3 inches and is made from PP plastic. The listing describes them for small animals and notes that they can also be used as a nest for kittens. Multiple trays can be helpful in a home with several pets or when boxes are needed in different rooms.
Best for: Households that need several small pans or want extra trays available. It was selected for its compact listed dimensions and multipack format. Limitation: The listing does not provide a larger size option, so measure your pet and available placement area before ordering.
Buying Guide: How to Choose an Extra Small Litter Box
What size should you choose?
Compare the listed length and width with the space where the pan will sit, then consider whether your pet can enter, turn, and use it comfortably. The 3-piece tray has the smallest stated footprint, while the 13.9 x 9.8-inch five-pack and 14 x 10.5-inch Petmate pan offer somewhat more area. The 16 x 12-inch model is better when extra room matters more than a tiny footprint.
Is a low-entry or open-top pan better?
Open-top pans provide direct access, and the mini set specifically describes a low mouth for kittens. For young, small, or mobility-limited pets, check the entry height as well as the overall dimensions. Only the mini set provides a stated height of about 0.98 inches; the other product details do not specify entry height.
Should you buy one pan or a multipack?
A single pan can be a straightforward choice for one pet and one location. A multipack can help when you need separate trays, spare pans, or boxes in multiple rooms. The three-piece set is the smallest option listed, while the five-piece set provides five trays with a larger stated footprint per pan.
When is an automatic model worth considering?
Choose an automatic model if reducing manual cleaning is more important than getting the smallest possible box. The listed automatic product offers app control and sensors, but its entrance is 15 x 16.7 inches. Compare the full unit’s placement requirements before buying; the provided details do not state its overall dimensions.
Frequently Asked Questions
What is the smallest litter box in this list?
The 3-piece kitten litter box set is smallest by listed footprint, at about 9.65 x 7.28 inches per tray.
Which option is best for a kitten?
The Petmate Basic pan is a simple everyday option at 14 x 10.5 inches. The mini set may suit very small kittens because it has a low entry, but its smaller interior may be restrictive as a kitten grows.
Can these pans be used for small animals besides cats?
The mini set is described for small pets including rabbits, hamsters, and chinchillas. The five-piece set is also described for small animals. Check the dimensions against the specific animal before choosing.
Is the automatic litter box extra small?
No. Its listed entrance measures 15 x 16.7 inches, and the product is presented as a larger self-cleaning alternative rather than a compact pan.
What should I measure before buying?
Measure the intended floor space and compare it with the pan’s listed dimensions. Also consider your pet’s body size, entry needs, and room to turn around.