In most cases, I use "Catsan Hygiene plus" up to 14 days before a complete Austauch is necessary. (Of course, every day the fixed parts must be removed.) For some other products, I often had only a few days a foul-smelling mush in the litter box. Although "Catsan" one of the most expensive Katzensteus is the price into perspective quickly to use against Billigsteu that I tested case not last as long in each (!) By far and is so productive. Advantages over other products besides the long breath protection, the larger grains that rarely, compared to others in the paws may set up and be dragged through the apartment. The "normal" Catsan I would always prefer even the "Klupstreu varieties" of Catsan. When clumping litter is indeed also a very good odor protection but a complete change of the scattering by no later than 14 days is also required here, which the Klumpdstreu to use twice as much compared to the "normal" can be STEU. Even cleaning the litter box is in the use of clumping litter unpleasant and laborious, as these will stick very firmly in large clumps at the bottom of the litter box. Emptying the toilet is in the anti-caking "Hygiene stray" better. After many attempts to take advantage of more favorable comparison products, I always come back to "Catsan Hygiene plus". It is simply the better cat litter.