All our dogs hate both flavours of EVOLV (the flea and tick spray) and it's almost impossible to spray them as they run and hide and/or fight us when we try. We can't spray our GSD as she is too strong to hold still, while both her four-month-old pups put up such a fight that we have all but given up. They hate the smell and it seems the product itself irritates their skin. Also, but maybe because of the difficulty of applying the product, it doesn't seem to work (an added bonus!) -- we have sprayed them and cleaned the house and yard but they still have fleas. I would suggest to Wondercide that they produce a small tester pack so that you can find out if the product is suitable for your pet before you spring for the full bottle. I'm very disappointed with this product, as we had high hopes (Frontline and Advantage don't seem to work either).