Hi Sid,
You can scent a water source with something like anise extract to help orient the bees to it but adding a repellent to the source where they are unwelcome might work better.  Try almond extract as a repellent and it shouldn't take very much.  Let us know if it works.

I have had folks try almond extract added to water in a small garden type sprayer and sprayed around and in a swimming pool say it worked for them so give it a try and let us know how well it works.

FWIW

blane


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Blane White
MN Dept of Agriculture
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