Mosquito Barrier is a very strong liquid garlic made from very potent garlic cloves. The garlic used in Mosquito Barrier is a very powerful variety which is much more potent than the garlic found in grocery stores (in fact, our lab people here refer to it as super garlic). Spraying garlic to keep insects away is not something new, farmers and master gardeners have been doing it for many generations. Since mosquitoes are soft-bodied insects the garlic juice can be very toxic to them in increased concentrations. The juice does not harm humans or pets or plants, but to mosquitoes it can be deadly. The odor of it chases them out of the area and they stay away for as long as they can detect the odor. While the odor of sprayed garlic juice becomes undetectable to humans within minutes, the mosquitoes will still detect it. Mosquitoes have extremely sensitive odor sensing antennae, as high as 10,000 times better than humans. They can detect the garlic extract for much longer periods of time and will stay away from the sprayed area for up to a month and more. If the mosquitoes aren't in your yard, they cant get into your house. Additionally, Mosquito Barrier, when mixed with soybean oil (available at your local grocery store) plus the water, coats any standing water in the area with a very thin film of natural oil, including some garlic oil which is present in the garlic juice. This oil suffocates the mosquito larvae which are developing in any standing water. Mosquito Barrier, unlike harmful chemicals, doesn't kill bees or butterflies and is completely safe for children, fish, birds, dogs, cats and other pets. Generally, four applications are enough for the entire mosquito and tick season. Even in the heaviest of infestations the gallon size is almost always enough for the entire year for most homes - including areas where the mosquito is the state bird.Odourless in hours. Made from non-GMO garlic. Not harmful to the environment. Mosquitoes ticks cannot tolerate garlic – that is why there are no mosquitoes in a garlic field!. Just one spraying of all natural, liquid garlic juice-based Mosquito Barrier will keep mosquitoes ticks out of your yard and away from your home and family, 24 hours a day for nearly a month mostly. Mosquito Barrier Canada's Premier Mosquito Tick Repellent for Grassy Areas: Yards, Parks, Athletic Fields, Cottages and Golf Courses. Concentrated Liquid.