There is an indicator window with special " color changing crystals" that change from blue (when dry) to pink (when wet) to indicate when the unit needs to be "renewed". The unit will absorb approximately 4-6 ounces of moisture (depending on humidity levels this should take approximately 3-5 weeks). Once the moisture has been absorbed it can't leak or spill. This unit uses a specially engineered, crystallized silica gel that is odorless, non-toxic, eco-friendly and completely safe.

When the "color changing crystals" turn pink its time to "renew" the unit. Simply remove the unit from where it is and plug it into a power outlet in a well ventilated area (patio, garage, outside area, etc). The worldwide-patented technology will warm the crystals allowing them to expand and release the moisture as water vapor into the outside air. It takes about 10-12 hours to completely "renew" the unit. When it is completely renewed the indicator crystals will change back to blue and the unit is ready to absorb another 4-6 ounces of moisture. The crystals will remain active for 10 years if used correctly.

* Absorbs 6-8 ounces of moisture
* Works in a 500 cubic ft area
* No batteries or cords required
* 100% renewable - works up to 10 years
* Compact and silent
* Spill and mess free
* Non-toxic, child and pet safe
* Eco-Friendly