[clickman]

Last summer, the first after the worms having showed up, they got a bit smaller with the summer heat. But with the return of winter cold and the vehicle in storage, they really took off. So, in an effort to at least slow them down, while the garage temp hovered around lows of -5C I heated the interior from around 8am to 11pm (didn’t check temp). The worms slowly - very slowly - disappeared. It took around a week. During this process, overnight, while the heat was turned off, the worms would rebuild somewhat. Apparently once a pixel is stuck, it’s easier for the ones adjacent to do the same, hence the creation of what looks like worms.

Once they were completely gone, the garage temp went down to a low of around -7C with no return of the worms. Based on the exterior temps we had when this all started, if it got to -10 to -15C the pixels would probably have started to stick again, igniting new worms. I’ll be watching very closely next winter when the temps drop to see what the critical temp is. (Probably the older the display, the easier the pixels stick.)

The simplest way to kill worms is to leave the buttoned-up car in the summer sun for a few days.