All the good reviews, in my opinion, were written by Vectra employees in the process of promoting a product that's worthless. I put it on my 2 dogs, now one is continuing to scratch herself constantly. It's hard to put on, can't get all of it out the confusing opening of the little bottle.
Any other product is better than this pile of dung. I wish I would have used Frontline, the summers I did, my dogs never scratched themselves. I feel this unique blend of products attracts parasites to your pet and then let the bighting begin!
Do yourself a big favor, ***'t buy.
Preferred solution: Full refund.