Victor 1.75 LB, Snake Away, Repels Poisonous & Non Poisonous Snakes Away From Target Areas, Patented Formulation, Contains 7% Naphthalene & 28% Sulfur, 1.75 LB Presentation Covers .219 Acres, Residual: 2 To 3 Months, 91% Repellent Rate Of Garter Snakes & Rattle Snakes, Will Not Harm Snakes, Only EPA Registered Granular Snake Repellent On The Market, Repels By Temporarily Disrupting A Snake's Sensory Reception, Granules Are Applied Around The Perimeter Of Area You Want To Protect.