I treat Koko with frontline but I also spray the house and yard with Precor. Precor breaks the egg cycle so eggs that are laid do not mature.

quote by Bea
Start by giving them Silver colloid, an ancient natural anti-biotic
available in health stores. It also strengthens immune system.
I guess since Koko is a pretty brown color I do.t have to worry about her turning blue, which can happen with Silver. The term blue blood came about because royalty ate off of silver and over time enough leached into the food to give their skin a blue color.

There was a guy on a TV special that took so much Colloidal Silver he had turned blue.