I've put these brushes to good use cleaning a larger bird cage. All "nooks and crannies are clean with this easy to use brush. It makes hard scrubbing unnecessary. Much easier task.I was able to remove whatever sticky tar-like substance was mashed into the deep tread of those shoes.The packaging was exceptional. The box they arrived in doubles as a storage container.... a nice one.I'm happy. Those brushes should last a long time.