10 ways to remove rust stains

The apartment that we are living in currently is about 20+ years old. Inevitably there are several small rust stains on the basin and bath tub. After looking through several web sites, here's what other people use to get rid of this type of stain.

1. mix a lemon juice and flour paste and leave it overnight
2. leave a sponge soaked with hot white vinegar on the stain
3. gasoline or paint thinner, RUBBING IT ON WITH A DRY WASHCLOTH!!
4. Barkeeper's Friend
5. Mr. Clean Magic Eraser (works very well to remove tough scum stains on the bath tub!)
6. Lime Away or CLR
7. toothpaste
8.`shampoos for oily hair
9. Mix a paste of four tablespoons of flour,four tablespoons of white vinegar and eight tablespoons of peroxide. Please use protective gloves. Apply the mixture to the staines. Leave for a couple of hours then scrub clean with a brush and cold water.
10. Magica Rust Remover Spray from True Value Hardware

I'm trying the lemon juice and flour paste because my husband can't stand strong fumes from commercial cleaning solution. We'll see if this works.

(Source: http://wiki.answers.com/Q/What_will_clean_a_bath_tub_that_is_old_and_refuses_to_come_clean)