When the beads change color, you plug it into 120vac to dry it out, for reuse.
Here's the newest version..
Eva-Dry 333 Mini-Dehumidifier
Found some older models (lower cost) models on Ebay.
Eva-Dry EDV300 Mini-Dehumidifier - 5 Pack | eBay
If these work, they will pay for themselves in about a year,
since I'll be able to turn off my 40 watt plug-in dehumidifier.
(Which eats up about $60 a year in electricity).
Edit:
I am now officially
horrified!
Just measured my "40 watt plug-in dehumidifier" and it's using a horrific
62.5 watts!
1.5 kWh per day! @ $00.1633 /kWh, that's 24.5 cents a day! (more than we use for hot water)!
It's freakin $89.42 per year! It's been running for over 20 years
My DIY "40 watt plug-in dehumidifier" power use was based on labeled wattage requirements, and never measured until today..
Better late than never!
It's going off-grid today (using Solar back-up) and will be ripped out when the new dehumidifiers get here.
And, when those Eva-Dry EDV300s need to be plugged in?? Yes, Solar!!!