Add our economical extending agent to extend the life of our Plant Growth Stimulant, Fruit and Vegetable Sprays, Deer Repellents for Flowers and Shrubs and any other products for added rain resistance. Weathershield can extend the effectiveness of your deer repellents up to 2 months. Also acts as an antidesicent and antitranspirant. Locks in moisture and protects against winter kill, wind burn and drought. Comes in a 1 pint concentrate that mixes 1 to 12. Due to changes in shipping regulations, we cannot ship this item to California.