Here in the Chicago area we have to lift and bring in our tender bulbs, like the Elephant Ears. I store mine under the bench in the greenhouse which runs about 60 degrees F through the winter. In late winter I start to observe colonies of aphids on the "sprout" ends of the tubers which then want to spread to the rest of the greenhouse. Has anyone has success with sanitizing tubers/bulbs for problems like this? Sprays don't control them, at least none of the sprays I want to use in a closed environment like this. Bob Hoel 630-279-8510