Bee-wildered!

Can any apiarists out there help solve the mystery of the bees who appear to be foraging on seed compost out on the potting table?

At first we thought they were coming for water but, as they ignore any pools of water on the surface of the table, we've ruled that out.

It's a mystery to us! Any offers???

Footnote. They are probably rolling around laughing at my pathetic attempt to grow Aubergines!! Col