OK, does anyone have any tips for keeping ants out of the hummingbird feeders?! I seemed to have developed a problem recently with this. I worked all day yesterday out in the yard. The day before, I moved the feeder to a different spot. I saw the hummingbird "find" the new spot and drink from the feeder. Well yesterday, I never saw the birds once...and I could see the level had not gone down. So, noticing that the ants were no longer climbing up & down to get to the feeder at the old spot, I refilled the feeder and moved it back to the old spot. Within 20 minutes, the ants were back and by the end of the day, half the level had dropped. WHAT is the secret to keeping ants away?!!!!