In article , "Phil Wilson" wrote:
It's claimed you can re-dry Silical Gel in a 250-300 degree oven for a
half-hour. Google on -silica gel dry oven- .

I have also kinda rejuvinated activated carbon by heating, except it really smells!

I just wanted to add salt to the list, except sometimes when it really gets
moisture it starts to drip, and salt can be a problem

greg