Floors should never be flooded with water or be allowed to have standing water. This can loosen the adhesive.
Care should be taken with heavy furniture and appliances. Furniture protectors should be used that are at least 2” in diameter. The hard and small buttons sometimes found on the bottom of chairs and other pieces of furniture should be removed. High heeled shoes also apply here.
Protect the floors from dirt and grit that can be tracked in by using walk off mats at every entrance.
Do not use rubber backed mats. Certain rubber compounds can permanently stain vinyl.
Never use vinegar, acetone or lacquer thinner to clean these floors.
For extreme staining like nail polish , paint, dye and permanent markers try applying fingernail polish remover that contains acetone, but is not pure acetone with a soft cloth and gently rub.