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Use and Maintenance

Cat Litter Box Selection: Open, Closed, Top Entry

How to choose a cat litter box? Correct size calculation, comparison of open-closed and top-entry containers, special cases and material durability.

HK Cat Litter editorial team 27 May 2026 · updated 23 September 2026 6 min reading

Cat entering the litter box — cat litter box selection guide
Short answer

Litter box for your cat At least 1.5 times the length from nose to tail origin should be. There are three main types: open (best ventilation, cats accept the most), closed/cabin (scattering and image control, but smell accumulates inside) and top entry (minimal shedding, but not suitable for older cats and cats with joint problems). If in doubt clear and big Choose a container — cats prefer open containers much more often than closed ones.

Choosing a litter box is as decisive as choosing cat litter. The wrong container will render even the right litter useless. In this article, we discuss the types, sizes and which one is suitable for whom.

How to determine the correct size?

The most common mistake is to buy a small container. cat in bowl Must be able to turn, dig and squat comfortably.

1,5×cat size length
1×cat length width
15-20cmedge height
Bigif you are in doubt

When measuring, take the distance from the cat's nose to the base of the tail (excluding the tail). For the average adult cat this is usually 50×35cm or a larger container — most “standard” containers on the market are actually small.

Cheap trick: Large storage boxes (plastic boxes) make perfect litter boxes. You can enter by cutting one side and lowering it. It is both larger and cheaper.

Container types comparison

Criterion Open Closed Top-entry
Cat acceptance Highest Middle Variable
Ventilation Good Weak Poor-medium
Scatter control Weak Good The best
Smell (out) Spreads Is restricted Is restricted
Smell (inside) Does not accumulate Accumulates Accumulates
Ease of cleaning Easiest Middle Difficult
Senior cat Suitable Suitable Not suitable
Kitten Suitable Carefully Not suitable
Escape route Yes Single exit Single exit

Open containers

The simplest and most accepted type. Cats feel safe in open containers because they can see their surroundings and quickly escape if necessary — an important safety factor for an animal that is vulnerable when toileting.

Pros

  • Cats accept this type the most
  • No odor accumulates inside
  • Easiest to clean
  • The cat can see inside the container
  • Cheap and common

Cons

  • Scatter is too much
  • The scent spreads throughout the room
  • Exposed as image
  • Some cats urinate over the edge

The scattering problem is largely solved by a high-sided model and sand mat. See 9 permanent solutions, Is a mop useful?.

Closed (cabinet) containers

Models with a lid on the top and front entry. Attractive for owners — the smell spreads less, sand is not scattered, the appearance is more tidy. However, it carries some problems for the cat:

  • The smell accumulates inside. You don't smell it, but when the cat enters, it enters a dense ammonia environment.
  • One exit. In multi-cat homes, the dominant cat may block the entrance; The cat inside gets cornered.
  • Visibility is limited. The cat cannot see outside and may become anxious.
  • Cleaning can be neglected. Scooping may be delayed because you don't smell it.

If you are going to use a closed container: Leave the lid open frequently, scoop twice a day, and choose a model with a removable lid if possible. If your cat has started to reject the bowl, the first thing to try is to remove the lid. See 10 possible reasons.

Top-entry litter boxes

Closed boxes with holes at the top that the cat can enter from the top. By far the most effective solution for minimizing spillage — the sand from the cat's paws falls onto the cover as it exits.

However, it has serious limitations:

  • Older, overweight or joint-prone cats cannot climb — see. litter for older cats
  • Not suitable for kittens — see. kitten litter box
  • Absolutely not suitable in the post-operative period
  • One way out — risk in multi-cat household
  • Difficult to clean

Special cases

Status Recommended litter box Why
Kitten Open, low-sided Easy login
Elderly/arthritic Low entry open Climbing difficulty
Postoperative Open, low Entry without difficulty
Multi-cat home Open, big Escape route, competition reduction
Cat peeing while standing Open, high-sided Overflow prevention
Excessive scratching cat Top entry or high sided Scatter control
Small apartment Open, largest possible Ventilation priority
Use of pine pellets Double deck with sieve Chip separation. See pine pellets

Material and durability

Almost all litter trays are plastic. Things to consider:

  • Smooth surface: Scratch-resistant, high-quality plastic is long-lasting. Scratches harbor biofilm and retain odor. See litter box disinfection.
  • Rounded corners: Sharp inside corners create spots that are difficult to clean.
  • Thick sole: Thin plastic will crack over time.
  • Change: Change the container 1-2 times a year; Scratched plastic retains odor even when washed.

Whichever container you choose

With activated carbon cat litter from olive pits It keeps the odor at its source even in closed and poorly ventilated containers.

8 liters of olive pit cat litter Quadruple 8 L olive pit cat litter All cat litter packages

Frequently asked questions

How big should the cat litter box be?

It should be at least 1.5 times the length of the cat from nose to tail root. For the average adult cat this usually equates to a container 50×35 cm or larger.

Is an open or closed cat litter box better?

Cats generally prefer open containers because ventilation is better and there is an escape route. Closed containers reduce spillage and odor spreading throughout the room, but odor accumulates inside.

Who is the top entry litter box not suitable for?

It is not suitable for kittens, elderly cats with joint problems, and cats in the post-operative period; creates difficulty in climbing.

When should the litter box be changed?

When there are obvious scratches on the surface, the odor does not disappear even after washing, or there are cracks. In general, it is recommended to change it 1-2 times a year.

My cat does not use the closed bowl, what should I do?

The first thing to try is to remove the cover. In closed containers, odor accumulates inside and having only one exit can make cats nervous. If it accepts it without the cover, the reason becomes clear.

HK Cat Litter editorial team

The team that produces sand in our production facility in Ayvalık turns the most frequently asked questions in the field into a guide. Health-related sections are general information; It is not a substitute for a veterinary examination.

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