Mosquito Milk Insect Roll on Insect Repellent 50ml Mosquito Milk is effective against all biting insects mosquitoes, biting flies, deer flies, ticks, black flies, sand flies and even the legendary Scottish Midge. Mosquito Milk is ideal for tropical use Mosquito Milk has a fresh smell which is not affected by perspiration. Mosquito Milk is suitable for children over the age of three.