JayGee, I'm a bit late replying, but open feeding in areas with drought or dearth (and North Texas has both fairly often) can cause more bee deaths than starvation, as wandering foragers will come back with an army to rob a hive. All of my feed jars are on top of #8 screening on top of a migratory cover, with another box and a telescoping cover on top. Food isn't out where wanderers and lots of ants find it easily, and the bees don't starve. I do watch temperature to be sure it's over 55 degrees out when I leave the feed jar on overnight