I wanted to congratulate you on your excellent product, “K2r Rust Remover”.
I own two pairs of white jeans that have metal brass-like rivets commonly attached to each corner of the pockets on jeans. After each wash (white pants are only good for one wear per wash) the metal studs would “bleed” a brown rust-like substance, that could only be removed by some, but not many, professional dry cleaners, and then at “premium” prices.
Instead of expensive dry cleaners required to remove these rust-like stains, I am now using your K2r Rust Remover and am absolutely delighted with the results. One simply applies the remover to the stain, which disappears within a matter of seconds – one minute at most. The remover does not leave a crust or residue when it dries, leaving my jeans “ready to wear” without any further treatment.