Household Hints & Help

Like you, older house, several owners who did not deep clean.

I liked it because you can aim the spray in a thin squirt, more or less, if you fiddle with the spray nozzle
and
it smelled good while it was working.

I left it on for about an hour or more, then wiped it up with a paper towel before I started scrubbing just the grout with a very stiff bristle hand brush.
Toothbrush is too soft.
Had to go over a couple places that were still a bit dirty, but it worked wonders overall.

Have no idea what to seal it with, tho..gotta look that up.