Evapo-Rust® Gel combines the rust removing power of Evapo-Rust® with the ability to cling to vertical, rusted surfaces. Simply brush on and 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 and wait 3. Rinse and wipe clean For best results, do not use in direct sunlight. Use on rusted items at temperatures between 60°F and 90°F. Clean rusted item to remove dirt, oil, grease, and 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 and water to remove.