Well, it got worse.
We're talking serious biohazard worse. I could have started a farm that specialized in breeding rare and unusual species of mold. (No new pics of that, though. You're welcome.)
I decided there is no natural or non-toxic way to deal with grunge and inconvenience that is Grout.
So here's what I did.
- As per Makenzie's suggestion, I went over all the lines with a bleach pen and a toothbrush. What a great idea!! (yes, two exclamation points are really necessary.) The gel-like nature of it and fine tip made it easy to apply as a spot treatment, and a LOT less noxious to breath.
- As per a bunch of other suggestions, I picked up a grout cleaner and resealer. (This is the one I used.) Now, to be honest, I really don't think this would have done much to the dirt and stain issues had I not went over it with bleach first. However, it does seem to be preventing speedy regrowth, and I think overall the shower is staying cleaner and brighter than it ever has before.
While I was at the store I noticed this product. A bioezymatic tile and grout cleaner. It claims to clean with enzymes and be earth-friendly? For real? Have you ever heard of this? (might be what I try next time, as my bleach pen is almost out.)
Thanks so much for all of your help!