Beads are a "conditioned" silica gel product, completely simplifying rh control. They're conditioned to maintain humidity at a specific level. Whereas typical 50/50 solution will only release humidity, and does nothing to control excess, beads work both ways.

You can find them in a number of places...

Bargain Humidors Has the best pricing, some may say they offer inferior product compared to other vendors, but many I know have shown that to be completely incorrect.. actually finding them more durable and consistently sizes beads than competitors.

Heartfelt Industries Has virtually the same product, at nearly twice the cost, but they also offer convenient tubes for storage.

They are both available in 65% and 70% rh. Aplication is simple for both products... Simply spray them gently with distilled water until about 60% of the beads turn clear, and place in your humidor. Done