I've heard this before. I do use the plus but what I do is split the dose between two of them, and it's been fine, I haven't had an outbreak of fleas and they seem not to be bothered by it. I probably will go back to the top spot but truthfully, I really hate putting anything on them at all...
__________________ Theresa & The Boys +1  The reason a dog has so many friends is that he wags his tail instead of his tongue |