I have a bathtub that is one of those tub overlay and it is very ruff and very hard to clean. I am disabled and can no longer get on my hands and knees and use elbo greese like I used to. The sprays you buy have an odor that hurts my lungs so I can't use them. Any ideas for me?

I hesitate to pass this tip on to you because it does involve a little bit of elbow grease but give it a try anyway because it really works. Make a paste of cream of tartar (found in the spice and herb section of most grocery stores) and hydrogen
peroxide. Make sure the tub has been rinsed with hot water first,
apply the paste and let sit for a few hours or overnite.
Use a sponge to wipe off. This paste mixture is great on porcelain including toilet rings, counter tops, dishes, etc.

Bathtubs with porcelain enamel surfaces are more resistant to scratching and cannot be dulled easily, either; however, this doesn’t mean that, over the long term, they cannot be damaged by harsh abrasives or strong solutions. It’s therefore safest to use the same materials and procedures used for cleaning fiberglass surfaces.
Whenever you clean any kind of tub, always rinse afterward to ensure no cleaning residue remains.

In your case since you cant use the sprays because of allergies Tough stains can be removed with hydrogen peroxide. Trisodium phosphate (TSP) is no longer around; however, TSP substitutes like Spic and Span may remove stains and thick deposits of dirt, grease, or soap scum. Chlorine bleach is also effective; however, many people do not realize that it is a major pollutant, and should be avoided. It’s possible the newer oxygen bleaches like Sunlight may work, but we have seen no reference made to its use in this manner. Whatever you use, rinse it off quickly. Let me know how it goes! - Evette