CanadianRuss
Supportive Member
I had a demo today. The is is a washroom at a car dealership. All the grout is dark. After cleaning the grout is all dark except this one little area. I tried venom renew on the edges but had no luck. The rest I used esteam alkaline tile and grout cleaner with a citrusolve booster. Any suggestions. Some other issues were some areas came right up nice after agitating others that weren't even in traffic areas are still dark.