Large Copper Sulfate Crystals - 10 Lbs.

Large Copper Sulfate Crystals (Pentahydrate) **MADE IN THE USA FROM THE HIGHEST GRADE MATERIAL. A versatile farm chemical: Pest control - snails and slugs Pond cleaner - algae, mosquito larvae Natural fungicide mildew Antiseptic - household germs Organic Bordeaux mix - blight, apple scab, leaf curl, etc.); Remove old tree stumps (bore a hole and insert Kill roots clogging septic tank pipes - flush down the toilet. Wood and canvas preservative (prevents dry rot), ...or simply grow lovely blue crystals.Rate of use: For pipeline systems (toilets, etc.) - 1 cup down drains every 2 weeks or 2 cups per month.   STATES NOT REGISTERED AK