Get some denture tablets, unflavoured or a flavour you don’t mind, put two in the camel back and fill it up. Let it sit for a day and rinse out. Repeat a few times if needed. Helps strip a lot of the residue manufacturing solvents out. It won’t be perfect but it will be a lot better.
Get some denture tablets, unflavoured or a flavour you don’t mind, put two in the camel back and fill it up. Let it sit for a day and rinse out. Repeat a few times if needed. Helps strip a lot of the residue manufacturing solvents out. It won’t be perfect but it will be a lot better.