JT EATON 4 THE BIRDS^® BIRD REPELLENT will discourage pigeons, starlings, and other nuisance birds from nesting or perching on ledges, sills, roofs, peaks, cornices, bridges, and overpasses. JT EATON 4 THE BIRDS^® BIRD REPELLENT's transparent gel is easily applied with a caulking gun or putty knife The Bird Repellent gel is weather resistant for long lasting outdoor use. All surfaces should be cleaned of dust, dirt, droppings, and loose debris before treatment application. 4 The Birds Gel will not harm birds when used as directed. Use a caulking gun and/or a putty knife to apply this product. Press against surface to ensure good adhesion. To treat ledges or sills, apply beads of repellent no larger than 1/2" wide by 1/2" deep at the deepest part in strips no closer than 2" apart, beginning 1" in from the outer edge. To treat roofs, peaks, cornices, etc., apply a single bead of repellent along the highest point. A second treatment may be necessary if product becomes flattened by heavy bird traffic.