When a cat has a large number of fleas, pet owners should take the following measures to deal with it:

Using chemical flea and tick treatments: We can buy sprays, drops, or oral medications to spray on the cat to quickly kill adult fleas.
Physical methods: Normally, we can also use a fine-toothed comb to groom the cat's fur, which can remove fleas and their eggs.
Environmental cleaning: We need to thoroughly clean the cat's activity area, for example, by using a vacuum cleaner or cleaning agent to remove fleas and their eggs.
Regular bathing: This is very important. We can use a special flea and tick shampoo to keep the cat's body clean, which helps to remove fleas.