Monthly Cost
$17.00
Monthly Lbs
34.0
Annual Cost
$204
Boxes Needed
2
Leave empty for avg price ($0.5/lb)
Monthly
$17.00
Annual
$204
Per Lb
$0.50
34.0 lbs
0.9
Tanks, habitats, crates, litter & supplies — shop online or pick up in store
Free same-day delivery on orders $35+Affiliate link — we may earn a commission at no extra cost to you.
As an Amazon Associate, we earn from qualifying purchases.
Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Inputs
Result
One cat on clumping clay at 3-inch depth uses 34 lbs/month at $0.50/lb, costing $17.00 monthly or $204 per year. The N+1 rule means 2 litter boxes.
Inputs
Result
Two cats on crystal litter use 34 lbs/month total (17 lbs each) at $1.20/lb, costing $40.80 monthly. Despite lower volume, crystal is pricier per pound.
Inputs
Result
Three cats on pine pellets use 72 lbs/month (24 lbs each) at $0.40/lb, totaling just $28.80/month. Pine is the most cost-effective option for multi-cat homes.
A single cat using clumping clay litter at the recommended 3-inch depth needs about 34 pounds per month. Non-clumping clay uses the most at 55 lbs/month, while crystal and tofu litters are the most efficient at 17–18 lbs/month per cat.
| Litter Type | 1 Cat | 2 Cats | 3 Cats |
|---|---|---|---|
| Clumping Clay | 34 lbs | 68 lbs | 102 lbs |
| Non-Clumping | 55 lbs | 110 lbs | 165 lbs |
| Crystal | 17 lbs | 34 lbs | 51 lbs |
| Pine Pellet | 24 lbs | 48 lbs | 72 lbs |
Veterinarians recommend the N+1 rule: one litter box per cat plus one extra. So a household with 2 cats should have 3 litter boxes. This prevents territorial issues and ensures cats always have a clean option available.
Non-clumping clay is the cheapest per pound at about $0.30/lb, but it uses the most volume (55 lbs/month per cat), making monthly cost around $16.50. Pine pellets offer the best value overall at $9.60/month per cat. Crystal litter is the most expensive at $20.40/month despite using less volume.
| Litter Type | Cost/lb | Lbs/Month | Monthly Cost |
|---|---|---|---|
| Pine Pellet | $0.40 | 24 lbs | $9.60 |
| Non-Clumping Clay | $0.30 | 55 lbs | $16.50 |
| Clumping Clay | $0.50 | 34 lbs | $17.00 |
| Crystal | $1.20 | 17 lbs | $20.40 |
Clumping litter should be scooped daily and fully replaced every 2–4 weeks. Non-clumping litter needs a full change every 1–2 weeks since urine pools at the bottom. Crystal litter lasts 2–4 weeks before crystals become saturated.
Most veterinarians recommend 2–3 inches of litter depth, with 3 inches being ideal for clumping litters. Too shallow (under 2 inches) causes urine to pool at the bottom, while too deep (over 4 inches) wastes litter and some cats dislike the instability.
Discover tools for feeding schedules, pet costs, age conversion, and more.
Last Updated: Jul 24, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.