ok I'm TOTALLY confused - what the HECK is TSP?
I have heard of the rest of the stuff. I hadn't even read this thread yet and you inspired me to clean my shower - I have an older shower that has a roughness to it so that it wouldn't be easy to squeegee. I used LA's TOTALLY AWESOME. Which I use for everything. Clothing stains, pet stains, Its available at the dollar store for $1 for a spray bottle or $3 for a gallon! I sprayed it good - let it set over night then sprayed it again and then scrubbed it. It is coming out for the most part. I really should probably use bleach but I HATE the fumes that come with it. I even sprinkled baking soda on the brush and scrubbed the walls. It still needs some work but it sure looks a lot better!
I LOVE using vinegar for stuff. I use vinegar for almost anything else that I can't use the LA awesome for! I keep a spray bottle of vinegar at the sink and spray it on my pet dishes and any dish that the dog has licked b/c it helps cut the saliva slime on it - I just spray the vinegar on it and wash regularly. No soaking required!