renew bathroom floor tile?

I’m the OP, here is the after photo:

http://img205.imageshack.us/img205/8837/bathroomafter.jpg

i ended up using baking soda and peroxide
the peroxide seemed to be doing most of the work
used a kind of nylon stiff broom so i could stand and do the center areas
used old toothbrush for hard to reach areas

bought the best sealer i could find – Dupont Stonetech Bulletproof sealer:
http://www.amazon.com/StoneTech-BPSS12-32-BulletProof-Sealer-1-Quart/dp/B00065W8G8/ref=pd_bbs_sr_1?ie=UTF8&s=hi&qid=1240777091&sr=8-1

So far seems ok but haven’t tested it much yet. Only thing i may have done wrong is i think there still may have been a lot of baking soda on the floor when i applied the sealer (i vacuumed many times but did not mop with water) so i worry if its possible the baking soda may have absorbed and limited the effectiveness of the sealer

These guys came out to look and give estimate on grinding and cleaning. I ended up doing it myself but they were surprisingly helpful and honest so i mention them here:
http://www.perfectmarble.com – they restore/maintain natural stone

Mopar, The worst thing to happen to tile was the adoption of a “shouldered edge”. That’s a 5-7 degree bevel which was added because it eased the release of the tiles from the die on the presses.

By beveling the edges, a “valley” was created between the tiles. This valley served to create a place for dirt to accumulate, and grout to be applied unevenly.

There are other differences but this one feature is probably the most significant.

Did something change about the way tiles and grout are made? Because I have had these old bathrooms and never had any trouble cleaning them. Hm.

Everyone (most everyone) has had the experience of mixing vinegar and baking soda. It’s a standard elementary school science experiment. Did any of your kids back off from the fumes and the unexpected reaction? What’s your point? That you can mix these two, does not prove that you can mix any two. vbp, how about you go through all the permutations and let us know which are safe and which aren’t. Please report from personal experience and make your list complete. Or maybe you’ll do the wiser thing and tell people NOT to mix, knowing from experience that if people create one mixture that works well, they’re likely to assume that adding in another product from the same list might make it work better.