Last year I put boardman feeders on all of my hives with only fresh water - nothing else. The bees seemed to appreciate not having to fly too far to get water to cool their hives because they really went through it when the temps got high. Every other day or two, I would go out there early of a morning with a bucket of fresh water and switch their jars out. Riverrat thought this would be a good post to get all opinions, what do you guys think? I didn't do this till July last year because we had pleasant summer temps, but it has been in the 90s here and seems to be getting HOT early.