Cheapest cat litter that controls odor

Litter preference genuinely matters — cats are more likely to use the box consistently when the texture and scent match what they like, and most cats prefer unscented, fine-grained clumping litter over scented options despite what the packaging implies. For a rescue cat especially, getting this right early builds good habits. Quick questions: how many cats do you have, any litter box avoidance going on, and are you concerned about things like dust or litter being tracked around the flat?

Good news — she's already box-trained and settled, so you're not trying to fix a problem, just find something sustainable on a tight budget. Tell me a bit more about her: is she indoor-only, and roughly how often are you scooping or doing a full litter change?

That's a solid routine — daily scooping does most of the odor work, which means you don't need a premium litter to compensate for infrequent cleaning. My recommendation is Catsan Hygiene Plus non-clumping litter. It's consistently one of the cheapest options per litre on Amazon UK, often under £5 for a 10-litre bag, and it genuinely handles odor well because the mineral granules absorb urine and neutralise ammonia without relying on masking fragrances. It's unscented, which your cat will prefer and which actually works better for odor control in a small space than the heavily perfumed alternatives. The trade-off is it doesn't clump, so you're doing full changes rather than just scooping solids — but at your current weekly change schedule that's not a problem. It's widely available, goes on offer regularly, and a 10-litre bag lasts a solo indoor cat comfortably over a week.

Yes — don't swap it all at once. Mix roughly a quarter of the new litter into her current litter for a few days, then go half and half, then mostly new. The whole transition takes about a week. Rescue cats can be a bit sensitive to sudden changes, so this just removes any reason for her to decide the box feels wrong. If she's using it fine within a few days of the full switch, you're done. Given she has no avoidance history you'll almost certainly have no issues.