Some of the rubber coatings on the bottoms of small rugs and mats will react with linoleum and vinyl flooring. This reaction leaves a yellow stain on your floor that is difficult to remove with ordinary floor cleaning detergents. Before you resort to ripping up the floors and replacing the linoleum or calling a professional cleaner, you can use some common household ingredients to scour the floor and lift the stain.
Measure out 3 tbsp. of baking soda and 2 tbsp. of lemon juice or vinegar. Keep both ingredients in separate containers until you are ready to start cleaning the floor.
Wipe away any debris with a cloth soaked in soapy water. Sprinkle the baking soda on top of the stain. The entire stain should be coated by a thin layer. If this is not enough baking soda, add more. Bear in mind that you will need additional lemon juice or vinegar -- just use the same ratio you used earlier.
Pour the lemon juice or vinegar onto the baking soda. It will start to fizz. Mix the two ingredients on the floor to form a paste. Spread the paste evenly over the stain. Allow the paste to sit on the stain for about 10 minutes.
Scrub the paste into the stain with a stiff-bristled brush. Keep scrubbing until the stain disappears. Rinse the paste off with a clean, damp cloth. Wipe all of the paste away and allow the floor to dry. If the stain persists, repeat the process until it disappears.