🏆 Complete Buyer's Guide · Cat Care Products

2026 Low-Entry Litter Boxes for Large Cats: Frisco Jumbo Picks

Large cats over 15 lbs need easy-access litter boxes to avoid joint pain. Our 2026 guide highlights the Frisco High Sided Jumbo box with low entry for senior felines.

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ProPawPicks Editorial Team
ProPawPicks Reviewer
Updated

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Frisco High Sided Cat Litter Box, Jumbo ★ Top Pick: Frisco High Sided Cat Litter Box, Jumbo Check Price on Amazon →
24 in
Minimum recommended width for large cats
6-8 in
Ideal side height to contain spray
1.5x
Box length relative to cat length
15+ lbs
Weight range for these boxes
⚡ Key takeaways
  • Best Overall: Frisco High Sided Cat Litter Box, Jumbo. This jumbo box measures 24 x 18 x 9 inches, offering ample space for large cats.
  • Best Covered Box: Petmate Giant Litter Pan with Microban. The Petmate Giant Litter Pan is 24 x 18 x 8 inches with a snap-on dome for privacy.
  • Best for Low Tracking: Modkat Top Entry Cat Litter Box. The top-entry design forces cats to jump out, trapping litter in the box.
  • Best Value: Nature's Miracle Jumbo High Sided Litter Box. This affordable jumbo box (24 x 18 x 9 inches) has high sides and a non-stick surface for.
  • Best Design: IRIS Open Litter Box with Shield. The IRIS box features a removable shield that adds height to the back and sides, while the.
At a Glance

Quick Comparison

ProductBest For
Frisco High Sided Cat Litter Box, Jumbo Best Overall Check price →
Petmate Giant Litter Pan with Microban Best Covered Box Check price →
Modkat Top Entry Cat Litter Box Best for Low Tracking Check price →
Nature's Miracle Jumbo High Sided Litter Box Best Value Check price →
IRIS Open Litter Box with Shield Best Design Check price →

Quick answer

The best cat litter box for cats over 15 lbs is the Frisco High Sided Cat Litter Box, offering 24 inches of width and high walls to prevent spills. For cats that prefer covered boxes, the Petmate Giant Litter Pan provides ample room. If your cat kicks litter, the Modkat Top Entry Box contains mess effectively.

What to consider for Cat Litter Box For Cats Over 15 Lbs

Large cats need a box that is at least 1.5 times their body length. Measure your cat from nose to tail base and add a few inches. High sides (6 to 8 inches) help contain urine spray and litter scatter. A wide entry (no hood or a large opening) prevents discomfort. Consider the box’s weight capacity; some plastic pans may crack under heavy cats. Also, the box should be placed in a quiet, accessible area to encourage use.

What to look for in a cat litter or litter-area product

Strong clumping and odor control are essential for large cats that produce more waste. Low dust is important for feline respiratory health, especially for brachycephalic breeds. Low tracking reduces mess around the box. Multi-cat households should choose a litter that works well for multiple cats. Unscented options are best for sensitive cats who may avoid strongly perfumed litters.

How we chose these picks

  • Evaluated dimensions and weight capacity to ensure suitability for cats over 15 lbs.
  • Reviewed customer feedback on durability and ease of cleaning.
  • Considered design features like high sides, top entry, and low entry thresholds.
  • Checked for non-porous materials that resist odor and staining.
  • Prioritized products from reputable brands with positive reviews.
  • Included options for different preferences: open, covered, and top entry.
  • Never ranked a product higher just because it pays a commission.

What to avoid

  • Heavily scented litters that can deter cats from using the box.
  • High-dust clay litters that may aggravate respiratory issues.
  • Boxes that are too small or have low sides, causing discomfort and mess.
  • Sudden litter changes; transition gradually over a week.

For more advice, see our cat guides, cat care products, and cat health sections.

Why this matters

Large cats often develop joint issues as they age, so a box with a low entry threshold can prevent discomfort and encourage continued use.

The Options

Types Explained

Open High-Sided Box

A simple tray with tall walls (6 to 10 inches) to contain urine and litter. Provides easy access and good ventilation.

Best for: Cats that dislike confined spaces and owners who want easy cleaning.

Covered or Hooded Box

An enclosed box with a removable dome or hood for privacy. Often includes a carbon filter for odor control.

Best for: Cats that prefer privacy and owners who want to contain odors and litter scatter.

Top-Entry Box

A box with a lid that cats enter through a hole on top. Litter is trapped inside as the cat jumps out.

Best for: Reducing litter tracking and for cats that enjoy jumping. Not ideal for senior cats.

Jumbo or Giant Box

Extra-large boxes (over 24 inches long) designed for big cats or multiple cats. May have high sides or be open.

Best for: Large breed cats like Maine Coons or multiple cats sharing one box.
The Rankings

Top 5 Picks

#1
Frisco High Sided Cat Litter Box, Jumbo
Best Overall

Frisco High Sided Cat Litter Box, Jumbo

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This jumbo box measures 24 x 18 x 9 inches, offering ample space for large cats. The high sides prevent urine spray and litter scatter. It's made of durable plastic that resists odors. However, the open design may not suit cats that prefer privacy, and the high sides can be a challenge for older cats with mobility issues.

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#2
Petmate Giant Litter Pan with Microban
Best Covered Box

Petmate Giant Litter Pan with Microban

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The Petmate Giant Litter Pan is 24 x 18 x 8 inches with a snap-on dome for privacy. Microban antimicrobial protection reduces odor-causing bacteria. The large entry is suitable for big cats. A drawback is that the dome may feel cramped for very large cats, and cleaning can be cumbersome due to the two-piece design.

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#3
Modkat Top Entry Cat Litter Box
Best for Low Tracking

Modkat Top Entry Cat Litter Box

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The top-entry design forces cats to jump out, trapping litter in the box. It's spacious (22 x 22 x 14 inches) and made of non-porous polypropylene for easy cleaning. The flip lid allows quick scooping. However, some cats may be reluctant to jump in, and the top can be slippery if wet.

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#4
Nature's Miracle Jumbo High Sided Litter Box
Best Value

Nature's Miracle Jumbo High Sided Litter Box

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This affordable jumbo box (24 x 18 x 9 inches) has high sides and a non-stick surface for easy cleaning. It's lightweight yet sturdy. The downside is that the plastic may scratch over time, trapping odors, and the open design offers no privacy.

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#5
IRIS Open Litter Box with Shield
Best Design

IRIS Open Litter Box with Shield

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The IRIS box features a removable shield that adds height to the back and sides, while the front is low for easy entry. It's 23 x 16 x 11 inches, suitable for large cats. The sleek design fits modern homes. A limitation is that the shield may not be tall enough for cats that spray high, and the plastic can be brittle in cold temperatures.

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Before You Buy

Key Buying Factors

01

Size and Dimensions

The box should be at least 1.5 times your cat's length from nose to tail base. For cats over 15 lbs, look for boxes 24 inches long and 18 inches wide. High sides (6 to 8 inches) help contain urine and litter.

02

Entry Type

Top-entry boxes reduce tracking but may be difficult for older cats. Front-entry boxes with low thresholds are easier for arthritic cats. Covered boxes provide privacy but can trap odors and feel cramped.

03

Material and Durability

Thick, non-porous plastic resists odors and scratching. Avoid thin plastic that may crack under heavy cats. Some boxes have antimicrobial additives to reduce bacteria growth.

04

Ease of Cleaning

Smooth surfaces and rounded corners make scooping and washing easier. Removable shields or lids simplify deep cleaning. Non-stick coatings help prevent litter from sticking.

05

Stability and Non-Slip Base

A non-slip bottom or rubber feet prevent the box from sliding when your cat enters or exits. This is especially important for larger cats that may push the box around.

Living With It

Care, Cost and Maintenance

Daily Scooping

Scoop solid waste and clumps at least once daily. Use a slotted scoop to separate clean litter. Dispose of waste in a sealed bag or diaper pail to control odor.

Weekly Deep Cleaning

Empty all litter and wash the box with mild dish soap and warm water. Avoid harsh chemicals like bleach, which can deter cats. Rinse thoroughly and dry before refilling.

Litter Replacement Schedule

For clumping litter, completely replace every 2 to 4 weeks depending on usage. For non-clumping, change more frequently. Always maintain a depth of 2 to 3 inches.

Pro tip

Place a non-slip rug or mat under the litter box to prevent sliding and catch stray litter. This also provides stability for your cat when entering or exiting.

Frequently asked questions

How often should I change the litter in a box for a large cat?
For clumping litter, scoop daily and fully replace every 2 to 4 weeks. Large cats produce more waste, so you may need to change more often if odor develops. With non-clumping litter, replace entirely every 1 to 2 weeks. Always maintain a depth of 2 to 3 inches to allow proper clumping and absorption.
Is clumping or non-clumping litter better for large cats?
Clumping litter is generally better because it forms solid clumps that can be scooped out, keeping the box cleaner and reducing odor. Large cats produce more urine, so clumping helps manage moisture. Non-clumping litter absorbs urine but becomes saturated quickly, requiring more frequent full changes. However, some cats prefer the texture of non-clumping.
Can dust from cat litter harm my cat's lungs?
Yes, high-dust litters can irritate a cat's respiratory system, especially for cats with asthma or other breathing issues. Look for low-dust or dust-free litters labeled as such. Silica gel litters are virtually dust-free. If your cat coughs or sneezes after using the box, switch to a low-dust option and consult your veterinarian if symptoms persist.
How can I control odor from a large cat's litter box?
Use a high-quality clumping litter with activated charcoal or baking soda for odor control. Scoop at least once daily and fully change the litter regularly. Place the box in a well-ventilated area. Consider a covered box with a carbon filter. Adding a thin layer of baking soda under the litter can help. If odor persists, check for health issues with your vet.
How many litter boxes do I need for multiple large cats?
The general rule is one box per cat plus one extra. For large cats, ensure each box is jumbo-sized. Place boxes in different quiet locations to avoid territorial issues. Some cats prefer open boxes, others covered. Provide options to meet individual preferences.
What are the best low-tracking litter options for large cats?
Low-tracking litters have larger, heavier granules that stick less to paws. Crystal litters (silica gel) and pellet litters (wood, paper) track less than fine clay. Top-entry boxes also reduce tracking. Placing a litter mat outside the box catches stray granules. Avoid lightweight litters, as they scatter easily.
Should I use scented or unscented litter for my large cat?
Unscented litter is usually safer because cats have sensitive noses and may avoid strong fragrances. Scented litters can mask odors but may deter some cats from using the box. If you choose scented, introduce it gradually. For odor control, rely on clumping and frequent cleaning rather than perfumes.
My large cat suddenly stopped using the litter box. What should I do?
First, rule out medical issues by visiting your veterinarian. Common causes include urinary tract infections, arthritis, or stress. Ensure the box is large enough and easy to enter. Clean it thoroughly. If you've recently changed litter or box location, revert. Provide multiple boxes in quiet areas. If the problem persists, consult a certified cat behaviorist.
What size litter box is appropriate for a 20-pound cat?
A box at least 24 inches long and 18 inches wide is recommended. The sides should be 6 to 8 inches high to contain urine. Measure your cat from nose to tail base and add a few inches. Jumbo or giant boxes are ideal. Avoid hooded boxes that may feel cramped. Ensure the entry is wide enough for comfortable access.
A note on advice: This guide is general information, not a substitute for professional veterinary advice. Talk to your vet before changing your pet's diet or care routine, especially if your pet has allergies, kidney disease, pancreatitis, obesity, heart disease or any other medical condition.
Transparency

How we made this guide

How we chose. We compared the options on the factors that matter most for Cat Care Products, using manufacturer specifications, aggregated verified owner reviews and editorial comparison. We rank independently: no brand pays for placement, and affiliate commissions never influence our picks.

How it was written. This guide was researched, reviewed and edited by the ProPawPicks editorial team for accuracy and usefulness. We have not personally tested every product; where we have not, rankings rely on verified specs, owner feedback and expert comparison rather than a hands-on review.

Affiliate disclosure. ProPawPicks is reader-supported. If you buy through links on our site, we may earn a commission at no extra cost to you. See our affiliate disclosure.

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Sources and further reading

Some links below are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. Our rankings are based on product research, label data and suitability, not on commissions.