The glue is good--but the packaging isn't. I don't think that it is designed for airtightness--and, as a result, that makes it a waste of money. I opened up a completely unopened package--and it was totally hardened and useless. I have had one come to me immediately in that condition--hardened and unusable--but I thought that this was just a fluke. However, this time, it was because I thought that I could keep an unused package for when I needed it (or maybe it did come in that condition--I guess that I will never know)). This glue is only good if you don't get an old bottle shipped to you--and if you just buy it to use immediately (or if you can figure out how to make the bottle stay airtight for future use).