Copper Sulfate Powder (Pentahydrate)

• 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.