Mould?

[Hawklord]

I've just put the 2nd Apiguard treatment on today and found the monitoring tray full of mould. I'm guessing that this is pollen going mouldy, but should I be concerned about it?

 

[MJBee]

I would not be worried. Cold nights = condensation, damp hive debris and warm days = mould. I clean the board and wipe over with domestos to kill any remaining spores.
Regards Mike

PS once monitoring is finished remove the board this allows condensation to exit the hive via the OMF.