Thanks for the info, I waited, they weren't happy! I treated them because I thought it was going to rain and we would be inside, turns out it was HOT,HOT,HOT and humid. We have a pool plus there is a creek or some type of water just about every three blocks that I usually let them take a dip in on our walks. Poor things just had to suck it up and hang out in the airconditioning for the day. I like the frontline. Never any problems with fleas or ticks. We also do allot of wooded walks and spend time at local lakes.