Copper Sulfate Crystals - 20 Lbs.

Copper Sulfate Crystals (Pentahydrate) - 20 Lbs.**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