"Adams" for fleas and ticks best over the counter product for household and shampoo. Other than that, prescription medicine from vet. Collars are mostly worthless if from cheap manufacturer. Please ask your vet what they recommend.
I try to only use natural things like diatomaceous earth to kill the fleas and ticks on my property. It dries put the skin something fierce so don't put it on the kitty. A friend of mine used the collars on her dogs and she said they worked really well. I believe they were the seresto ones. Make sure to get the right size. Hope this helps!
No idea, my cats don't wear them. Call store or find out on the Internet
No clue, visit the store and ask them.
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