Biokats micro is an efficient cat litter and 1 litre of biokats micro binds at least 3 litres of liquid gimborn house cat litter is highly economical and an absolute must for thrifty cat owners who value quality over quantity the litter forms lumps making it even more efficient and despite its fine grain content this cat litter is virtually dust free biokats micro as with all biokats cat litter products stands for top quality only the best materials for micro biokats micro classic