Fipronil

An over-the-counter remedy for feather mites, fipronil is most commonly seen in Frontline® or Fiprotec® pipettes at a rate of 402mg (4,02ml). So the following calculations by Kaat Deleux are based on that active ingredient content.

For a 600-800kg horse, 1250mg fipronil required to treat all four legs. This works out at between 3 and 4 of the XL size pipettes.

For Frontline Spray bottle (if still available), 125ml per leg. It is far less concentrated than the pipettes.

Repeat after 7-10 days.