Recommendations to remove stains
This is one small sample of what is a ton of old stains on rubber flooring in a 4 floor building stairwells. In the pic it might look recent but it is old and no matter how hard we scrub they won't come out. We have Diversey Profi and SSS Peroxy Hdox at our disposal, neither of which has touched these multiple stains. As I said these are in stairwells so I can't bring any equipment (autoscrubber, side by side, etc) in for most of the stains because it's too narrow. Thankful for any advice you might have.
This is one small sample of what is a ton of old stains on rubber flooring in a 4 floor building stairwells. In the pic it might look recent but it is old and no matter how hard we scrub they won't come out. We have Diversey Profi and SSS Peroxy Hdox at our disposal, neither of which has touched these multiple stains. As I said these are in stairwells so I can't bring any equipment (autoscrubber, side by side, etc) in for most of the stains because it's too narrow. Thankful for any advice you might have.