BlueBay Aquatics 10KG - Calcium Chloride Flake Dihydrate 77% Food Grade Marine Concrete Desiccant Pool Balancer

Very good and you can save plastic/ environment by reusing single use moisture traps

I was looking as uncertain of the best way to refill my crystal dehumidifiers. This is the same as the stuff in the original. It quietus exactly the same and it's a lot cheaper. Woolley recommend it.

Brilliant product just what needed to winter prepare my statice caravan to help with any so far condensation. Good product and good value.

Bought this stuff to make own moisture collectors with a couple of builders buckets (one with holes drilled in it) for problem areas in basement.One thing of note, picture of sack does not represent product delivered it was actually in 2 clear poly bags inside a cardboard box. However for my purpose smaller bags worked, but picture is misleading.