Home depot makes a grout cleaner in a large orange bottle, it's amazing. Spray on, wait 2 minutes and wipe clean. It's also excellent at cleaning tiles with texture or divets.
After cleaning though, you would want to seal the grout, with a grout sealant to prevent the problem from reoccuring!
I just tried the Kaboom that was posted by Alex. It worked great! Thanks Alex!
The best thing I have used is pine-sol for cleaning up around the white grout, and deoderizing. Bleach just seems to make the smell worse, and does not go away! I mop at least twice a week between my husband and 4 year old, plus the new whizzer in training is crawling...so he likes to watch the big guys!
A commercial cleaner I use called Kaboom works really well. Spray, let set about 30 seconds, then wipe off with a damp cloth, sponge, whatever. It even continues to work after it's wiped up. It's best to clean around the toilet at least once a week. If yo u get it clean to your satisfaction, apply grout sealer when dry so that future clean ups are a snap.c
Try MR. Clean Magic sponge. It seems to work wonders on removing almost any stain! I too have a 6 yr. old who occasionally misses and this works for me (however the stain hasn't been there a long time).
try using ammonia I don't know if it will get stains out but will help with urine odor. good luck.
Have you tried soaking a cotton ball in bleach and just laying it on the stain for 15-30 minutes. That is the only thing I can think of at the moment.
I have the very same problem, only I have 2 kids (21 and 17). I am very interested in the responses. I have lived in my home for 20 years, so my grout has seen alot of hand scrubbing with a lot of different cleaning products and have sealed my bathroom grout well lets just say I keep a gallon can on hand now. I still hate to use their bathroom. I get it clean, smelling fresh and sealed again, and before you know it, one of them uses the bathroom again. Will watch for what others have to say.
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