We are so impressed with the Grout Doktor. We were very unhappy with a cream grout we had in the kitchen and found that Doktor could color it for us to a darker color, not only does it now look brilliant, the colorant is epoxy based, spill a glass of wine, fanta, tomato sauce, it just wipes off with a wet sponge. The Doctor was polite, obliging and courteous, can not recommend him and his work highly enough.

Judi Collins