[doorgunner69]

Have heard from several vets that flea collars can cause tumors.

[doorgunner69]

Thinking of the old plastic ones that had the chemical embedded in them. May be a newer version now that does not cause problems.

We just do not let our cats roam, or get off the patio when they come out with us.

[little jeremiah]

Rubbing diatomeacous earth into their fur gets rid of fleas. Have to keep doing it for a while. Kills the adult fleas and after a while, no more fleas. Harmless unless breathed in. ANd if they eat it, it kills intestinal worms. About 1 teaspoon once or twice a day kills the worms.