Add orange peels (or any citrus peel) to a quart of white vinegar in a closed container and let it set for two weeks. Combine citrus/vinegar solution half/half with water and use for cleaning. Works on floors, tile, fixtures, etc. Smells good and is tough on scum! Best of all there are no chemicals.
If you need to remove collar stains from your dress shirts, you need proper tools. Organic body oil and hair oil will accumulate around the neck which then creates the ring stain around the collar on a dress shirt.
Ring Around the Collar Remedy - I had great success soaking in a strong Fairy Liquid (supermarket own brand) solution, then rinsing, to remove the grease. I then needed some Vanish for the tougher stain on the collar. Worked fantastically well.
•Dip a q-tip in baby shampoo and rub it on the stuck spot of a zipper. •Clean leather shoes, coats and purses. Just a dab on a soft cloth. •Mix it with a little baking soda and use it to clean chrome. •Put a drop on a damp cotton ball to remove eye makeup, then rinse. •Use a little baby shampoo on legs and underarms for a smooth and soft shave. •Rub a little baby shampoo around a collar as a pre-wash to get rid of ring around of the collar. •Use as a pet shampoo.