hI JOANNE,
WE RECENTLY CLEANED A COUPLE OF PROPERTIES FOR A GUY WE CLEAN OVENS FOR, I USED A HEAVY DUTY FOOD SAFE DE-GREASER ON THE ORANGE GROUT IN THE SHOWER, I USED IT NEAT WITH A GROUT BRUSH THEN A STEAMER AND IT SHIFTED IT NO PROBLEM, THERE IS PROBABLY A BETTER WAY AS I AM NEW TO CLEANING HOUSES BUT IT WORKED FOR US AND THE CLIENT SAID IT WAS THE FIRST TIME THE SHOWER AND BATHROOM HAD LOOKED SO CLEAN. HAPPY DAYS, HE HAS ASKED US TO CLEAN 10 MORE PROPERTIES.
MCM