Not sure what you're saying FRM, seems to contradict itself. Silica gel can be recycled, though with colourless silica gel it's impossible to know when it's saturated.
If you can get hold of colour changing silica gel, it's easy to see when it's saturated. Blue when dry, pink when wet. This also helps when you're drying it out in an oven. Take care not to inhale dust from it though.
The better you can seal the storage unit, the longer the gel will last before needing to be dried out. Hermetically sealed is possible and certainly the best option. In theory at least, if it's totally airtight/sealed the gel would last forever, unsaturated.