Hi all, I have a problem with my lab pup. Thought shes not really a pup any more going on 16 months. However, i have used various flea/tick preventives on her and with all she reacts very badly. She didn't have seizures, thank God, but she did become extremely anxious, pacing, really weird. I did speak to vet who gave me yet another brand (these are all the ones that apply on the back), which was no better. I feel i have to use something since we spend a lot of time in the country so there is a fear of picking up a lyme tick, not to mention regular ticks or fleas. Does anyone have any suggestions, for either a brand that might be helpful, or even better a non insecticide prevention.