Hello, this is a bottle we bought for some wound care when we got our foster dog. We did end up using some but ultimately she healed quite quickly and we should perhaps have bought a smaller bottle. This is >5 years old, but I don't see a date of expiration on it. Hopefully you use this already and know the safe use of it, etc.. I think it's safe to dispose of but I don't want to flush/dilute it if it can still be useful to someone. I'm near the spot on the map but also travel to PB on the regular. Thanks!