Since most of the Power Tower remains relatively untouched, you can suffice with only a periodic dusting off of the equipment. Those places you do touch, like the horizontal high bar, the grips on the dip station, the back-rest, and so on, you can best wipe clean with a damp cloth. Avoid the use of chemicals or excessive water, these can damage the protected powder coating on the metal, diminish the quality of padding or cause corrosion.