[elmer_fud]

How big is your pond?

I put a few tablespoons of salt and about 1 of honey into a 5 gallon bucket. Between these additions and keeping the water warm I have been able to keep bees out of my neighbors hot tub.

 

[JConnolly]

I don't add anything to the water. Lawn sprinklers fill it, grass glippings get blown in, water grows scum, bees love it. I read a tip to add duckweed to the water so I'm going to give that a try.

 

[Fivej]

What @ JConnolly said. Unless you are trying to get them to avoid a neighbors pool or hot tub, do not add anything and do not clean. The skunkier the better. J

 

[Tigger19687]

What @ JConnolly said. Unless you are trying to get them to avoid a neighbors pool or hot tub, do not add anything and do not clean. The skunkier the better. J

Ugg my dam cat does that.

When I had chickens I had a very small waterer, the red bottom kind. I put in rocks all around the inside because Bees were coming to drink out of it in the yard.
I didn't mind but the hens would eat the bees so I put it higher up where the Hens couldn't get to it.
You don't need to add anything just keep water in it.