F10 Germicidal Wound Spray with Insecticide (500ml)F10 Germicidal Wound Spray with Insecticide is a broad spectrum antimicrobial action of F10 actives combined with insecticidal action of 0. 25% cypermethrin. Completely safe, but not for use on domestic cats. Do not spray in the presence of reptiles spray into cloth and wipe the animal down. Uses A topical spot treatment spray to act as: Antiseptic wound treatment Barrier to infection Insect repellent (Prevention of Fly strike) Treatment of maggot