Buying cat litter online
Cat litter is one of those products where the bag price alone is a poor guide, because a cheaper-looking bag can easily cost more per kilogram than a pricier one if it is smaller, and delivery arrangements for a heavy item are shown at checkout on any given order rather than something worth guessing about in advance.
Why price per kilogram is the fair comparison
Litter bags vary widely in size, from small 5-6kg bags to bulk sacks well over 10kg, and clumping litters are generally used in smaller amounts per change than non-clumping ones because the used portion is scooped out rather than the whole tray emptied. Dividing the price by the weight gives a genuine comparison; comparing sticker prices across different bag sizes does not.
Clumping litters tend to cost more per kilogram than basic non-clumping ones, but many owners find they use less litter overall between full tray changes, which can narrow or close the gap depending on how the tray is managed day to day.
What actually changes the cost of keeping a cat in litter
The number of cats using a tray, how often it is fully changed versus scooped, and the litter type all affect how far a bag goes far more than the brand name on the front. A single cat with a well-maintained clumping tray typically gets through less litter over a month than the same cat on a non-clumping litter that needs a full change more often.
Delivery costs and any current offers are shown at checkout once your basket and address are set, since these depend on the order rather than the product itself, so it is worth adding what you need to your basket to see the actual delivery detail for that order.
The cheaper end of the range
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Catit Pea Husk Unscented Clumping Cat Litter
Unscented clumping cat litter made from upcycled pea husks, 99% dust-free
£17.99
Catit Go Natural Pea Husk Clumping Litter Vanilla
Pea husk clumping litter, 99.9% dust-free and biodegradable, lightly vanilla-scented
£17.99
Catsan Hygiene Non-Clumping Odour Control Cat Litter
Natural non-clumping litter that locks liquid into white mineral granules
£5.45
Catsan Hygiene Cat Litter
A 20LTR unscented mineral cat litter that works on odour before it develops
£20.45
Plastic Cat Litter Tray — Large & XL
A sturdy plastic litter tray in two generous sizes — practical, no-fuss, and easy to clean.
From£11.49
PawHut XL Stainless Steel Enclosed Cat Litter Box with Flip-Top Lid and Scoop
A 60cm enclosed litter box with a stainless steel tray that will not absorb odour, a 180-degree flip-top lid, deodoriser compartment, filter step and scoop.
£76.99
Catsan Ultra Clumping Odour Control Cat Litter
Fine-granule clumping clay litter, low tracking and made to stop odour forming
£10.25
App-Controlled Self-Cleaning Cat Litter Box
A smart self-cleaning litter box that scoops waste automatically and bags it contactlessly, so you never face the mess. The companion app records toilet use and weight, and sends full-box, low-litter and cleaning reminders.
£399.99
Catsan Smart Pack 2 Inlays
Two litter tray inlays that Catsan say work as well as 30 litres of ordinary litter
£13.19
Enclosed Cat Litter Box with Carbon Filter
A roomy enclosed litter box with a carbon filter that helps keep household odours in check.
From£28.99
Catsan Natural Biodegradable Clumping Cat Litter
A 20 litre bag of clumping cat litter made from wheat, fully biodegradable
£31.49
Catsan Wood Comfort Non Clumping Cat Litter
Biodegradable wood-granule litter for cats and kittens
£18.75
Common questions
- Is clumping or non-clumping cat litter cheaper overall?
- Clumping litter usually costs more per kilogram, but because only the soiled clumps are scooped out rather than the whole tray emptied, many owners find a bag lasts longer in practice. Which works out cheaper depends on how many cats use the tray and how often it is fully changed.
- How much cat litter do I need per month?
- It varies with the number of cats, the litter type and how the tray is maintained, so there is no single figure that applies to every household. As a starting point, most single-cat households with a well-maintained clumping tray get through one medium bag every few weeks.
- Does buying a bigger bag of litter always save money?
- Usually, but not always — check the price per kilogram rather than assuming the larger bag is automatically cheaper, since promotional pricing on a smaller bag can sometimes undercut it. Comparing the actual cost per kilogram is the reliable way to check.
- Will I see the delivery cost before I pay?
- Yes, delivery details for your specific order are shown at checkout once your basket and delivery address are set, since they depend on what you are ordering and where it is going rather than being fixed for every purchase.
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Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.