It is most important to prepare a toilet with cat food and cat litter. Just let the domestic cat run in the house. If you mind him going to bed, you should control it from an early age. If the cat is very young, it's best to let him use cat litter first. The litter box can be put in the toilet. If you leave it outside, clean it in time and spray toilet water to prevent it from going there again. Put the urine-wiped poop or paper towels in the cat's toilet. Cats over a month old can feed young cats food or whole cats food. If you find it can't bite, you can soak it in warm water or goat's milk. Remember no milk. Food and water are open, and it will eat naturally if it wants to eat. Kittens will be vaccinated at the beginning of three months, and it is good for you and your cat to be sterilized by deworming at the right age. That's all I think of at present, and I'll add it later.
If the economy permits, you can buy better cat food. If supermarket food is unacceptable, you'd better buy natural food. Also, don't let the cat go out, that is, don't keep it alone. Now the security outside is not good, many cats are stolen and eaten, and there are all kinds of perverts who abuse cats. If you love him, you are responsible for his life. A cat can live at least 15 years if it is fed scientifically. My two cats have cat food, canned food and cat litter every month.