You can put your humis in big ziplock bags or tie them off in a garbage bag.
That'll alleviate the situation immediately and effectively, even if it looks like hell.
If there's anything that should be 100% completely obvious, it's that you humidors are not airtight by any means. All the beads in the world can't make up for a lousy, leaky humidor. If you are adding water every two days, your humidors could be replaced by shoeboxes and yield much the same protection for your cigars.
Try the bag trick, but be very careful how much water you add to your beads. Rehydrate them properly making sure not to flood them. If you do flood them, once you've placed the humis in plastic bags the humidity will rise rapidly to 100% and you risk ending up with a forest of mold on your hands.
You may be able to do some work on your humis and make them airtight. If not, you'd be far better served by rubbermaid containers or ziplock bags.
Good Luck!!!
