Yellow stains on linoleum floors are typically caused by a chemical reaction between the flooring a rubber backing on floor mats or rubber soled shoes. They can be quite difficult to remove if they have penetrated deep into the floor's surface. Because of this, it is important to clean your floors regularly. In addition, a bit of hard work and elbow grease a couple times a year will leave your floors looking shiny and new.
Mix the baking soda and lemon juice to make a mildly abrasive paste.
Depending upon the stain size, use a toothbrush or a stiff bristled brush to apply the paste to yellowing area. Work into the area for several minutes to loosen the stain from the floor's surface. Rinse the area with a damp cloth and water.
Remove all the furniture from the linoleum floor and sweep thoroughly.
Mix a few drops of dish soap and warm water in a bucket. Using a stiff bristled brush scrub, start in one corner of the room and clean the entire floor surface. Work in small areas and thoroughly dry with a towel before moving on. Allow the floor to dry completely.
Apply straight ammonia to the cleaned surface to strip any additional wax or dirt build-up from the floor. You should again start in a corner, and work in small sections across the floor. Allow ammonia to sit for a few minutes, then scrub with a stiff brush. Rinse the area with water and dry with a towel. Allow the floor to dry. You will notice the surface is very dull after this step.
Evenly apply a liquid floor wax with a cloth or sponge, working in small sections and ensuring all surface area is covered. Floor wax will need to dry completely before the floor can be walked on or furniture can be replaced.