They left the test mirrors clean and streak-free. Comet Bathroom Cleaner also did well. And it s good on soap scum and mildew. Whatever product you choose, Consumer Reports says paper towels are fine. But old newspapers work, too, and cost a lot less.
Any cleaner can cause damage on some surfaces.
With glass cleaners, Consumer Reports says be especially careful around latex paint and aluminum. Glass Plus can also damage stainless steel. So can Comet Bathroom spray. It can also damage granite and marble.