Review on 🛠️ Versatile RotoScrub Long Reach Drill Brush: Ideal for Car Tires, Toilets, Corners, Edges, Hard-to-Reach Areas - Heavy Duty Bristles by Michael Schwegman

Attached to my Cordless Ryobi Drill, sprinkled with baking soda and some water to make a paste. I rotated the brush and cleaned the deep areas and walls of my many stainless steel Contigo mugs/cups that I couldn't reach with my fingers and a sponge. I cleaned the bottom and left only a thin line in the bottom corner seam of the mug. Wow, that was easy and great. The brush still looks great after cleaning 6 hard shells. Good. If the bottom has a raised center, the bottom areas won't reach the edge very well. But the pages look like new.