Put the cat litter no more than half of the edge of the cat litter box at a time, and change it once a week or so. But the specific decision depends on the type of cat litter box and the material of the cat litter. The thickness of the cat litter should ensure that it is not easy to stick to the bottom, as long as the litter will not be dug out by the cat. The excrement in the cat litter box should be cleaned every day, about one week to ten days. As long as the cat litter is found to have changed smell or the dust has become larger, it is necessary to completely replace the cat litter with a new one.

The consequences of not changing cat litter:

1. Bacteria will breed. If the excrement in the cat litter is not cleaned for a long time, a large number of bacteria and parasites may breed, which is very unhygienic.

2. It will cause cats to get sick. Cats excreting in unhygienic litter boxes can easily become infected with bacteria and parasites, causing urinary tract diseases.

3. It will cause cats to urinate randomly. Cats are very clean animals. They are mysophobic and do not like to urinate in dirty litter boxes, so they will look for other suitable places to urinate.

4. It will affect the cat’s mood. Cats do not have a clean place to urinate, or they cannot find a more suitable place to urinate. They often hold back their urine, which can cause cats to become anxious and irritable.

5. It will affect the owner’s life. If the cat litter box is not cleaned for a long time, the smell will be very strong, and dry cat litter dust will float in the air, which will have a great impact on the owner's life.