Fly Killer Spray 500mlMethod: Spray on the kitchen cabinet, floor or table at night, and the dead flies will be found the next day Spray on the trail and find dead flies every day. Spray the table surface and you will find a fly on the dead table. Spray directly on the fly's dry hair fur. Leave on for up to 10 minutes, then comb or rinse. It is also safe if the spray comes into contact with human skin or is ingested by pets. Free of toxins and harmful heavy metals.