On Jun 7, 11:32 pm, mm wrote:

Coulld you call her and have her read you the label?


I went to Home Depot and looked at another container of Sulfamic acid
(the acid was in powder form). The front of the container stated the
product was for removing grout haze and grout residue. The directions
said "let the cement or grout cure for 10 days."

I expect I need to be careful to keep the Sulfamic acid out of the
grout lines.