After cleaning buckets and stuff in bleach, we've all heard that you should leave the item in the sun for 2 days. Is the objective of these 2 days to have sunlight on the bleach cleaned item or to just get the item hot/dry?
Sun will do some damage to plastic buckets so don't over do it. 2 days is fine, but not the kind of thing you want to forget outside and come back to a few weeks or months later. I know, just come look around my side yard lol.
The idea is to have it in direct sunlight. Heat will dry it out, but I don't know if you get a residue left that will just redissolve. Never tried.
It's not about sunlight or heat, it's about getting it to completely dry out. Of course sunlight and heat help that happen faster. I like the idea of using a fan instead. I have used compressed air to get into hard to reach areas.
/There should be no concerns of residue as long as you're using a bleach that is just a chlorine solution.