What do I do if I waited too long to apply my next coat of Rust Bullet?

If an additional coat of Rust Bullet is needed and more than 24 hours have passed, the coated surface should be etched with Rust Bullet Metal Blast or scuffed up with 150 grit sandpaper to reopen Rust Bullet’s pores. This will allow proper adhesion of an additional coat. This 24 hour period is decreased in areas with higher humidity levels.