Flea collars do not work. They are a thing of the past. The only way to truly prevent fleas is with a veterinarian prescribed flea prevention (Frontline, Advantage, etc). Don't waste your money on these collars. They are useless. They do not make direct contact with the skin.

Pros: NONE

Cons: Not effective agains flea prevention

I bought one of these for my dog before I was able to get her into the vet because she had fleas when I picked her up from the pound. I don't think it helped her at all.

Pros: ??

Cons: I don't think they work

Work great and no irritation

Pros: good

Cons: none

This flea collar did not work well at all and created some irritation on my baby's neck!!!! I do not recommend this for a pug.

Pros: Cheap

Cons: Does not work well

i hate these collars they should take them off the market. they do not work and i have seen animals come to the shelter with these on and they are so tied that you have to cut them off. they should ban these collars.

Pros: none

Cons: don't work