I have the Wilton gumpaste, and the problem I'm having is keeping the unused portion soft enough for later use.

I cover it with shortening and cover it in plastic wrap then store in a ziploc bag at room temperature.

Is there a better way to store it that maximizes shelf life? Would it be better to store it in the fridge? Does homemade gumpaste tend to last longer?

Thanks for any tips!

thats what I do, and if it gets hard, I nuke it for a few seconds...