Message #34361

[clint]

How it works is it doesnt get in the blood stream. When you apply it to a dog i makes crystals on their hair. And when fleas rub against the hair it poisons and kills them. And when fleas lay their egg they lay them on a single strand of hair and when it falls off the flee egg hatches and they eat the dead hair until they get old enough to jump on the dog. And its just a big cycle. But when a dog has the bayer tree and shrub on it when the baby flea eats the hair it kills him.