OMF good or bad

[Calum]

Hi,
I use both OMFs and solid floors.
I think healthy bees survive on both.
OMF allows easy varroa infestation and treatment assessment which is good.
I open the front and back of mine in the winter to improve hive ventilation this really helps lower moisture and prevent mould in the hive which is positive.
I have also been told that keeping the bees colder over the winter is better as it decreases the brood size / keeps the colony out of brood for longer - which slows down the varroa buildup over the winter.
Dont like the amounts of pollen that gets lost in them - but my colonies always seem to have more than enough of that so I dont worry about that.

[Adam]

Is the falling pollen a real problem? Would pollen that has fallen onto a solid floor actually be carried out of the hive in any case? Bees seem to treat the floor differently than a roof - for example a mesh floor is not propolised to seal it up so maybe fallen pollen is trash in their tiny minds??