The Schedule in One Table
VCA gives the most complete schedule we found: scoop clumps daily, empty and refill the box with fresh litter weekly, scrub the box with hot water and mild soap monthly, and replace the box yearly.[3] The ASPCA is stricter about washing: scoop at least once a day, and once a week clean all boxes with warm water and unscented soap, baking soda, or no soap, and replace the litter completely.[1] Cornell sits in between, asking for daily scooping with clumping litter and a full change often enough to keep the litter dry and clean.[2] If you only remember one rule, make it the daily scoop.
| Task | How often | Source |
|---|---|---|
| Scoop clumps and waste | Daily (the ASPCA says at least once a day) | VCA, ASPCA, Cornell |
| Empty and refill with fresh litter | Weekly (VCA); weekly with a wash (ASPCA) | VCA, ASPCA |
| Scrub the box | Monthly (VCA); weekly (ASPCA) | VCA, ASPCA |
| Replace the box | Yearly | VCA |
The ASPCA and VCA disagree on how often to scrub, so we suggest the stricter weekly wash if you have a cat with a litter box problem, and the monthly scrub if you scoop daily and your cat has no issues.
Step by Step: Deep-Cleaning the Box
- Empty it. Dump all the litter and scoop out any residue.
- Wash with something mild. VCA says hot water and mild soap; the ASPCA says warm water with unscented soap, baking soda or no soap; Cornell says a gentle detergent.[3][1][2] Rinse until no soap smell remains.
- Skip ammonia, vinegar and scents. The ASPCA says to avoid ammonia-based and scented products, and Cornell says ammonia or vinegar-based cleaners smell like urine.[1][2]
- Dry it, then refill. Cornell says to dry the box before refilling with clean litter.[2] Use the depth your cat prefers: the ASPCA and Cornell say one to two inches, VCA says at least three.[1][2][3]
The Right Scoop
Daily scooping is the habit that matters, so the scoop should be easy to pick up. Keep one next to each box.
Van Ness 2 Pack of Giant Litter Scoops
A two-pack of giant scoops, so one lives by each box and daily scooping, the schedule every source agrees on, takes seconds.
Pros
- Two scoops in the pack, one per box
- Large scoop speeds up daily scooping
Cons
- Giant size may be awkward for small hands
- The title does not state the material, so check the listing before you buy
When It Is Time to Replace the Box
VCA says to replace the litter box yearly.[3] It is a good moment to pick a size that fits your cat; the ASPCA says most cats prefer large boxes that are easy to enter, and VCA says about 1.5 times your cat's length.[1][3]
IRIS USA XX-Large High-Sided Cat Litter Box with Scatter Shield
An extra large box with high sides and a scatter shield, a sensible swap when an old scratched box is due for its yearly replacement.
Pros
- XX-Large footprint for big cats
- High sides and scatter shield keep litter and spray in the box
Cons
- High sides are harder for kittens and stiff seniors to enter
- Takes up floor space
If you have a senior cat or a kitten, a low-entry box may suit better. See our guide to litter box problems.
Cleaning Accidents Outside the Box
For urine on carpet or flooring, the ASPCA and VCA both recommend an enzymatic cleaner, not a scented or ammonia-based one.[1][3]
Sprinkle & Sweep Pet Stain & Odor Enzyme Spray, 24 oz, 2 Pack
An enzyme spray for urine on carpet and floors; the ASPCA and VCA both say to use an enzymatic cleaner so no smell is left to draw your cat back.
Pros
- Enzyme formula, per the listing, which is what the sources recommend
- Two-bottle pack for more than one accident
Cons
- Not a long-established brand, so read the label for surface warnings
- Enzyme cleaners need to reach the stain itself; follow the label
Keep the Litter Choice Simple
Most cats prefer unscented clumping litter with a fine texture, according to the ASPCA and Cornell, and clumping litter is what makes daily scooping effective.[1][2] Our budget litter comparison and automatic litter box guide cover the options if scooping every day is hard to keep up.
Quick Comparison
| Product | What It's For |
|---|---|
| Van Ness 2 Pack of Giant Litter Scoops | Daily scooping, one scoop per box |
| IRIS USA XX-Large High-Sided Litter Box | A large replacement box for the yearly swap |
| Sprinkle & Sweep Enzyme Spray | Cleaning accidents outside the box |
Our Take
Scoop every day, empty and wash the box on a regular schedule with mild soap, never use ammonia or vinegar, and replace the box once a year. Clean up accidents with an enzymatic cleaner.
Frequently Asked Questions
References
- ASPCA. Litter Box Problems. ASPCA (no date shown on the page; read 2026-11-05)
- Cornell University College of Veterinary Medicine, Cornell Feline Health Center. Feline Behavior Problems: House Soiling (last updated January 2015). Cornell Feline Health Center (read 2026-11-05)
- VCA Animal Hospitals. House Training for Kittens and Cats (last updated January 17, 2024). VCA Animal Hospitals (read 2026-11-05)