bird repellent gel

Gel Bird Repellent is 100% biological product , adopt rawnaturall material, slowly andsustaining release. This Gel has the function of expelling birds fromfour aspectsvisual, tactile, taste, smell, etc. It can be used of direct coating ,harmless to metal structures,sealed masonry,ornamental metals. Effective expelling time: one years This Gel is biodegradable,non-toxic, harmless to bird,other animals,peoples and the environment. Guarantee Period:Three years