ok. i thought this up one day when i wanted to clean my shower.
i hate stinky smelling cleaners that you need a mask and gloves to use. then it dawned on me - what is that ick in the shower and tub - it's soap scum and oiley residue. hum-guess what worked?? cheap shampoo - i used suave. i bought it for 88 cents at the local dollar general and have used it ever since.
makes the bathroom smell great too - simply wet the shower down. put some on a wet rag and wipe. didnt seem to take a lot of elbow grease either. make sure you rinse it off afterwards.....