I have tried this product twice with the same results. It does do a good job of cleaning my small glass spoon pipes but! I had both bottles turn to a block of solid cement after only a few uses. I stored the bottles upright in a desk drawer properly sealed and this happened both times so not a good value.
Except I would like the poker part to be more pointy and maybe filed a bit. but good for pipes since the end is kinda blunt and will help break up any stuck material.