I've used B&B for years and love it! Usually I keep it warm during the winter by having it in a foam box I made, with a light bulb on it. If I'm not using it for a long time, I'll turn the light off. I always leave the pumps in. After the winter months, the resin will form crystals and won't pump. I just set the jug with the pump in it, in a pot of water (An OLD pot---not my wife's good one!!!) and set in on a burner on the stove set on low heat for a couple of hours. The resin magically turns back to liquid---including what is in the pump.