Thank you all for the great advice, it really helps a lot. I believe we will take our dogs in and get them heartworm tested and then start on a monthly tablet called
"Interceptor". We did get these tablets and only used them when we came back from the mountains. However living so close to the Mexican border and their dogs are not that closely checked, plus with all the rain we have had there will most likely be areas of stagnet water, I don't want to take any chances with Daisy and Perry. We do use Advantage in the summer for flea control and to tell you the truth we had never had a flea problem before we took them to get groomed and they came back loaded with fleas. So now my husband self taught himself how to do a Schnauzer cut and he does them
himself. Like Shais_Mom I don't like the oiliness of Advantage, but that is what we use.
Thanks again
Jackie