How does it work. Tank Mix is an extremely efficient visual, scent and taste deterrent for birds that dries clear. When birds touch or inhale Tank Mix (e.g. when they land on a treated surface) they feel an irritation. This makes them leave the area. With time, the birds learn that the treated area is not safe for them and they fly away to find more comfortable places for feeding and nesting. Tank Mix is made of natural ingredients and may be safely used in areas where humans or animals are present. Although it irritates the birds, it doesn't harm them and is a "green", nature-friendly solution. When Tank Mix dries it's almost invisible for human eyes but it includes bright micro-particles that are highly visible to birds. Is it safe. Safe to use on trees, bushes, crops, lawns, etc. Avoid contact with eyes, use safety goggles when spraying. How to use. Spray liberally to areas where birds are active including roosting, nesting, and/or areas of pecking activity. Turn the tip of the sprayer to the Spray position, point the tip to the target area and spray with the built-in hand sprayer. Spray twice a week for the first 2-weeks, once a week for the next 2-weeks - 3-weeks, then every 20-days- 30-days, as needed. The goal is to keep constant pressure on the birds so they decide to move somewhere else. Works great on pigeons, sparrows, seagulls, magpies, starlings, swallows, geese and many more. Just try it once, see how the birds react and all your doubts are gone.