TrustleafOrange Indicator Silica Gel Desiccant 2-5mm Beads * 500g Bags (OG 500g Bag)

I put this in a tupperware container in my electric car (which rarely gets properly warm due to lots of short journeys) and it has completely solved the condensation problem I was having every cold morning. I haven't had to put it in the microwave it yet, but I can see the colour change is starting from orange to green.