We regularly do a newspaper building and we are having problems with ink handprints on a painted concrete wall. Tried diluted ZEP with no luck and any stronger would bubble the paint. Any suggestions. Thanks.
I am not sure about the limonene that they sell, I have never used it. The product I was talking is 95% pure citrus acid. I have checked the MSDS of limonene compared to the D-Limonene that I was referring to and they are not the same type product. The only thing they have in common is citrus acid. The most important thing is finding products that meet your needs.