Review on 🧽 3M Sanding Sponge, 3.75 x 2.625 Inch by Oscar Thompson

I agree with some other users that the sanding crumbs fall off the blocks very quickly. I've used it to sand down a few primed doors to smooth out the primer before painting and it was good for a door before the edges of the block ran out of sand and the corners were rubbed down. I have used other 3M sanding pads and have not had this problem. But it's terrible. I will not buy them again and recommend finding other blocks.