You can get from " Home Depot" , probably others, white Vinegar at 30% . I tried using it on some rusty metal bolts and stuff. Wow! It works. And being vinegar it doesn't have the hazmat potential. Can dump down drains , drain cleaner.
Remember BB guns? You can use a bunch a BB's with water in a plastic container to scrub the inside. The 30% vinegar would eat any residual rust. My sister said they used crushed ice to clean inside coffee pots, hard but not scratched
Remember BB guns? You can use a bunch a BB's with water in a plastic container to scrub the inside. The 30% vinegar would eat any residual rust. My sister said they used crushed ice to clean inside coffee pots, hard but not scratched