I was discussing with our Vet about Flea and Heartworm topical treatment. We currently use Sentinal and Heart guard monthly for Lexi. He was not totally in favor of Revolution because it was topical. In Florida Lexi will be in the pool, under the sprinklers, and bathed every week or two depending on what she gets in to. He felt that there were better products ( names escape me) available that will not be affected by bathing. Has anyone had any experience with this product?