aaand of course as soon as I post that my brain reminds me that dishwashers may not be as common In Japan as they are here. Argh, make that a double apology from me then.

Well, that's the point I was going to make. It MIGHT be okay in the dishwasher, but are rare as dishwashers are here, that's not something they would even think to include on the packaging, so I'm not sure. It just doesn't say.