Bird-X Bird Proof Gel, 12 Cartridges for Use in Caulking Guns Sticky transparent Bird Proof bird repellent blocks birds from roosting. Apply bird gel in 10.5 oz. cartridge, treats up to 10 linear feet. with a caulking gun. Non-toxic, environmentally safe and ecologically sound. Bird Proof creates a clear yet sticky, uncomfortable surface so birds roost elsewhere. Keep pigeons, starlings and sparrows off ledges, window sills, gutters, ornamental copings and beams. Protection for a full year or longer. Non-toxic, and harmless to metal structures, sealed masonry and ornamental metals. NON-RETURNABLE. *IMPORTANT NOTE Small birds may become fatally entrapped by this tacky repellent. To reduce hazards to legally protected species, and to avoid noncompliance with the Federal Migratory Bird Treaty Act, follow all instructions carefully. Keep out of lakes, ponds, and streams. It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Read all instructions sheet before beginning and follow all use directions and precautions. This item ships from a separate warehouse and may require extra time for delivery.