We live in Pemba, Mozambique and prayed our yard today with Organophosphorus for the killing and prevention of ticks and fleas. The person of the company that did the spraying gave us a half liter of this mixture and said we can use this mixture on our dogs by applying a little bit with a paint brush directly on their skin. I want to confirm if I can use it as told to me by this person. Please let me know. Thanks Susan Venter