I installed them on Tuesday. They've been out and about since it warmed up yesterday. But when I check my hive top feeder, there are maybe 1 or 2 bees in there. I have the Mann Lake feeder that looks like a super. It's just Dominoes sugar with water. The mix is 1 pint of water to a pound of sugar. I thought they'd be all over it. Any idea why they're ignoring it?