Check the listing for details. Rust-Oleum Rust Dissolver Trigger Spray Gel | Heavy-Duty. Condition: New, Made in United Kingdom. Listed at 21.30 USD. Its powerful, clinging gel formula is designed for maximum effectiveness, quickly dissolving corrosion without the need for harsh scraping or wire brushing. The thick, non-drip consistency ensures the gel stays exactly where you apply it, making it perfect for vertical surfaces and hard-to-reach areas where liquid products typically run off.