Sometimes regular cleaners just can’t get the job done, but you still don’t want all the unnecessary chemicals found in commercial cleaners. Here is how to make a heavy duty version at home.
1 tsp household ammonia
1/4 cup hydrogen peroxide
3/4 cup water
Combine well in bowl. Pour small amounts onto grout, or saturate towel and press to grout on a wall, so grout is saturated with the solution. Scrub with stiff bristled brush (being careful to check that tile cannot be scratched. Allow to sit for several minutes then rinse well with warm water. Repeat if needed.