I’ve got a few different things going at once. A small dehumidifier (cheapo from AliExpress from memory) in my man-cave / scope storage/work area goes 24/7 and pulls a few litres of water out of the air each week.
I also have about 100g of gel beads (harvested from a bunch of smaller rechargeable packs I got off eBay) tied off inside a fabric pouch and inside a 2” tube in the visual back of my scope. This is especially important if I’m leaving the rig setup outside or else I get condensation inside my sct corrector plate. When they change colour I stick them in the oven to recharge.
In my larger cases I use these things:
https://www.silicagel.com.au/rechargeable-dehumidifiers
The thing I love about them is that they are rechargeable in the oven and have an indicator that tells you when that’s required.
I honestly don’t think silica gel bags are enough to keep even a small room dry. I say that based on what I pour out of the dehumidifier each week- there’s no way the silica could soak up that much.