Bobbex Deer Repellent 2.5 Gallon Concentrated Spray - B550160 Bobbex Deer Repellent is proven the most effective and longest lasting spray on the market. Bobbex is environmentally friendly, using only natural ingredients that stop deer browsing by using multiple smell and taste deterrents. Apply the spray directly to the surface of foliage to repel deer. Bobbex WILL NOT WASH OFF! This larger more convenient size will make up to 22.5 gallons of mixture using our spring/summer mixing ratio and 15 gallons using our fall/winter mixing ratio. Mix with water into a pressurized sprayer.