Review on 🧹 2-Pack 360 Degree Stiff Bristles Brush│Versatile Household Deep Cleaning Scrubber/Tool for Window Grooves, Kitchen, Bathroom, and Floors by Jessica Morris

These little brushes are almost perfect for cleaning the tracks on my sliding glass doors and windows. The bristles are very hard and the shape is perfect. But they rust after the first use. I'd rather not leave rust when cleaning next time, so I won't be buying them again. If you only use them once, you're done. They do an excellent cleaning job. I think the company could use a different metal to make them as they will likely be in contact with water and possibly chemicals. I just used Dawn dish soap in some warm water. I'm disappointed because I really liked everything else about them.