I'd like to know what the best/reasonably priced chemical to use for tile grout cleaning.
Apparently, the local birds are using the top of my tiled spa wall for a bathroom ( i know... real gross..) & the grout seems to be getting it the worst. Strange, as this never happened before this season.
Any idea what I could use or cleaning technique that wouldn't damage the grout?
And possibly any ideas to deter the birds?
Thanks for any help!!