After recently inheriting two camera bags of kit, I found each item (6 lenses, 2 cameras, various accessories) in a poly bag along with a little handmade cotton bag containing Silica Gel.
Each bag had "15g" or "30g" or whatever written on it in Biro. It reminded me that my Grandfather (the source) used to dry these out on a tray in the oven, and then calculate the quantity/weight needed for each poly bag.
I'll be sticking them in the oven again tonight, around 100ºC for an hour, and doing likewise with new Polygrip bags nicked from the kitchen
Sadly some of my own old equipment that's been stored through the last 20 years in various garages and basements hasn't been treated so well, and I've lost a few OM/Pentacon lenses to fungus