I done fucked up. I know some of my drink cups say handwash only, but I thought that was due to their vacuum chambers.
I assumed (wrongly) that these two bottles would be ok. They are clearly not made from whatever Nalgene is made from.
Meanwhile, I have some cheap vacuum wall plastic tumblers from Walmart, going on 15 years now, that I’ve always tossed in the dishwasher.
Also, I’m getting strong deja vu from my shrinky dink bottles. Have I done this before? Or seen a post on here if the same? I can’t recall.
Edit: hello adhd brain, I forgot to provide details. Red 1L Nalgene for scale. The two bottles beside it used to be the same size before yesterday. ☹️
I think it’s the heat that done them in. Sometimes, dishwashers have modes that don’t use a lot of heat, and I think it might also help to put heat sensitive things in the top rack. But even if you do that, I’m guessing that the kind of plastic that melts in the dishwasher probably won’t be safe to drink from, even if it doesn’t look like it melted.
Yes, I assumed the heat was the culprit too. They were on the top rack, the cycle was normal not pots & pans, and I never use the dryer feature. My hot water heaters are in the attic though where it’s a million degrees despite an attic fan heroically trying to provide some ventilation. I don’t even need to have the water heaters turned on this time of year. When we first moved here a few years back in June, it took us 4 months to notice that the previous owner had turned the heaters off. I thought we had normal hot water all summer!!
Dishwashers frequently have a heating element inside that heats the water as it cycles, and it gets pretty hot on most default cycles.
I had a cheap nalgene type knockoff that I put in the dishwasher a couple years ago. When I took it out, it was like 1/3 it’s original size. Its transformed version was so small I didn’t even register it, spent way too long looking for it.