It's been sitting in a corner of my place weeks. Finally tried it out today. Definitely not as good as what would come out of the dry cleaner, but all buttons are intact. I think it'll work better spending 5 minutes on a shirt as I need them rather than saving up a bunch to do at once as I did today. Gets boring.
Interestingly, the Asian dry cleaner that had most recently been smashing my buttons boarded up out of nowhere one day. There's a handwritten sign that says they'll be back and for now they can be phoned, but it doesn't really say what for. Maybe I can get one of them to come to my house and jiffy my shirts right here.

I've had to use a new dry cleaner for non-shirts. I may give them a shirt that still has its spare buttons intact to see how they do. If that works out, maybe we can raffle off Trim's game-used garment cleaner for a goEMAW philanthropy.