CoastalPet - Safari - Cat Flea Combs - Grooming Supplies

does the cat comb have a single row of teeth?

I read that we can use flea comb to treat cat's acne under chin. Did anyone use this comb for that purpose yet? Did it work? Thanks.

Why is the dog comb cheaper and the cat comb higher in price? The same company makes both, and the dog comb has double row of teeth.

How long are the teeth and how many teeth are there per inch?