The racoon gang (9 of them) that frequents my back porch also loves hummer food, unfortunately....They've learned to tip the feeder until the sugar water pours (mostly!) into their greedy little mouths. Then they come up to the kitchen windows where the cats lie and attempt interspecies communication with them. I know this from the sticky, smeared mess they leave on the outside of each pane, complete with paw and tongue prints, for me to clean off in the morning ;) If you're having trouble attracting them to a feeder, try planting a red or yellow flowering shrub that they like--like a sage--close to the feeder. Worked for us :)