|  Food-grade biodegradable bird repellent BirdShield bird repellent spray repels birds from nesting loafing and roosting in and upon structures marinas and homes. It is also sprayed on crops such as fruits vegetables grains and beans. Birds find it unpalatable and inedible and seek untreated food sources elsewhere. Environmentally safe product tested on commercial buildings in Lewiston Idaho built between 1880 and 1920. Developed with major university and USDA assistance. The active ingredient methyl anthranilate is made from a constituent of concord grapes and has been used for decades by the food and drug industry to flavor candy gum sodas and drugs EPA classified as reduced risk US FDA listed as Generally Recognized as Safe
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