Evapo-Rust® Gel combines the rust removing power of Evapo-Rust® with the ability to cling to vertical, rusted surfaces. Simply brush on & allow an hour to work, then rinse away the rust with water. Also, it is safer than other gelled rust removers. Evapo-Rust get does not harm copper, brass, or aluminium. Brushable Biodegradable Clings to vertical surfaces No VOCs Low Odor Directions 1. Prep rusted surface 2. Apply gel & wait 3. Rinse & wipe clean For best results, do not use in direct sunlight. Use on rusted items at temperatures between 60°F & 90°F. Clean rusted item to remove dirt, oil, grease, & loose rust scales. Apply a thick coat of Evapo-Rust® Gel to the rusted areas. Allow to work for 1 to 2 hours or until rust appears removed. Rinse off. Repeat application on heavily corroded areas. If Evapo-Rust® Gel drys on surface, the gel may require a soft brush & water to remove.