Here in Central Arkansas I am feeding a Dry Pollen Substitute (Ultra Bee from Mannlakeltd) and the bees are really going after it.
Here is a picture of a container I put out to see if they would mess with it.
In about 30 minutes bees were all over it.
You have to put sticks in it for the feed is like talcum powder it is so fine.
The Bees will just waller in it and climb up on the sticks so the other bees will help groom them.
They are taking it back to their hives.
Here is a picture.
The second picture is like the feeders I built. They work fine.