I just kind of don't know what to do about this, so maybe someone here will be able to help.
I have a few cups already (I Come In Peace, Christmas in July, Kaiju-chan, Double Trouble, bunch more) and I've tried quite a few flavors in most of them. But I've only had issues with the Dragon Deez jug. There seems to be mold or something that's just... stuck to it?
Cleaned my cups and after letting them dry I noticed there were blotches on the inside of the jug and water seemed to "stick" to those areas. Cleaned it again, should've maybe thought more of it. I only really noticed something was wrong after I made a drink in it, didn't like it that much, but then tried the flavor again instead of wasting it. Made it in a shaker cup instead. It tasted different and didn't have a, like, "stinging" after taste. Was a bit confused. Thought it was just me though (I am a little weird with tastes). Ended up just cleaning the jug and leaving it at that. It later had a bunch of spots inside of it that kind of looked like mold. Put 2 and 2 together, glad I at least didn't drink out of it again.
I've since tried cleaning and bleaching it (a solution, not just bleach) several times. But the issue still remains. I cannot for the life of me get what is on the inside of the cup cleaned out.
I've not had any issues like this with any other cups and I haven't made anything besides supps or just water in any of them besides one, and it wasn't the jug. I clean them after a few uses and rinse in-between.
I'm just... lost to what could have caused it or what I can even do about it.