Like dishwashers and washing machines, shower doors help get other things clean—while accumulating an impossible-to-get-rid-of ring of soap scum themselves. Luckily, a little preventive care (and a few quick cleaning tricks) can help your shower door stay sparkling clean. Banish Buildup With Pantry Ingredients People swear by the incredible soap scum-slaying ability of distilled vinegar (heated first) mixed with grease-cutting dish detergent such as Dawn, in equal proportions. If your shower is made of stone, however, the vinegar could damage it. Instead, mix some liquid soap with baking soda until it’s the consistency of frosting, says Kris Koenig, CEO of Natura Clean. Scrub it onto the glass shower door with a nonabrasive sponge. Multitask by Cleaning Right After a Shower Clean the shower door as you’re finishing up your shower. The warm water has already loosened up the grime, plus you don’t have to worry about getting messy or wet. …