Moving hummingbird feeders can mislead wasps for a while as a temporary fix, but as soon as one wasp discovers where the feeder is, it communicates the location to others in its hive. A better long-term strategy is to draw them to an area of your yard where they won’t be a problem. To do that, fill a hummingbird feeder with an extremely concentrated sugar water mixture (a cup of sugar per cup of water is not too strong!) and hang it in an area of the yard where the wasps won’t bother birds, people, or pets. After hanging the feeder, brush the outside with that same concentrated sugar mixture. When wasps discover this feeder, they usually ignore sugar water feeders holding a more bird-friendly sugar concentration (usually ¼ – 1/3 cup of sugar per cup of water).
Wasp guards do not work on tube-style hummingbird feeders, especially in hot or sunny weather. When the warm air above the sugar water heats up, it expands, forcing some of the water through the feeder ports. If wasp guards are on these, the sugar water drips on them, making them more attractive to bees and wasps (which are also attracted to the color yellow). Of course, even without the guards, the wasps can get to the sugar water.
If you have a bee or wasp problem, it’s wiser to use the kinds of dish hummingbird feeders that require the birds to dip their bills in the sugar water from above. If you fill it lower than the full volume, hummingbirds will still be able to reach the sugar water with their tongues but wasps won’t have access to it at all.