I recently had some bags of pellets that had gotten wet and turned into hard puffed up bags. I wasn't sure what to do with them so as a joke I put them into the wash out area on the side of my fathers driveway like bricks. During that nice rain we got they acted as sand bags damming up the water. So if your home is at risk of flood they might make a good water bearer give you some extra time to get a pump.