You can put some grapefruit peels in the toilet. The ketones contained in the grapefruit peels produce a smell that cats don’t like very much. Putting an appropriate amount of grapefruit peels at the door and inside of the toilet can not only remove the odor, but also make the cat get tired of the toilet.

Since cats prefer flowing drinking water, it is best to prepare an automatic circulating water feeder. The sound of gurgling water can attract a cat's attention more than a still water bowl. In addition, it has to be said that most automatic circulating water feeders have the function of filtering the water source, which can effectively filter out foreign matter such as cat hair and dust from entering the water storage tank and causing bacterial growth.

Cats must not be allowed to develop a habit of drinking toilet water, otherwise it will be much more difficult to correct their behavior in the future. If you find your cat drinking toilet water once, make sure it is safe to stop drinking and take some punitive measures. At the same time, in order to reduce the disadvantages to the cat entering the toilet, it must be cleaned frequently.