Sweep the VCT flooring with a dust mop to remove any loose dirt, dust or debris. Avoid using a vacuum to prevent damage from the machine’s wheel and beater bar.
Create a mixture of one gallon lukewarm water, one-half cup ammonia, one-quarter cup boric acid powder and two teaspoons mineral oil in a plastic bucket. Stir the ingredients until they are well-mixed and the boric acid powder is completely dissolved.
Wet a mop with the mixture and wring it out until it is damp, not soaking wet. Scrub the floor with the homemade VCT cleaner and polisher, re-wetting the mop when necessary.
Rinse the mop under a cool tap and fill a separate bucket with plain, lukewarm water. Dampen the mop with the water and rinse off the flooring.
Wipe down the flooring with a towel to remove the moisture and prevent water spots and streaking.