So here's a problem I haven't been able to find a solution to and don't really know where to look.
I have two Contigo thermoses that I bought from Costco. I put them in the sink to be washed/soaked and for some bizarre reason my roommate decided to fill them with soapy water, close them, turn them upside down and then leave them on the counter. They were left like that for about a month before I needed to use one again and discovered that they were still dirty. I rinsed them both out thoroughly but when I used one I could taste the burn of the soap residue (probably) in the cap. I used bottle cleaner and rinsed them both out again but I can still smell the soap.
So.. anyone know of any solutions to this, or are both bottles pretty much destined for the trash?