Re: IPM boards in or out? How do you use them?
all solid bottoms here avatardad.
my neighbor tried screened bottoms and the few times i looked into those hives with him i saw many times more hive beetles in them than i see in mine.
the oil in the trays drowned hundreds of beetles but they were still all over the place in the hives.
i feel like the open bottoms make it easier for the beetles (and perhaps other pests) to locate the hives, but it could also have something to do with locating the hives in mostly shade and right next to a pond where the ground stayed damp all the time.
he wasn't really able to work his hives properly due to health reasons. all 6 eventually died out over a 3 year period. he was also treatment free and using the same stock as me.
unless i was going to try sugar dusting i don't think i would use the screened bottoms.
journaling the growth of a (mite) treatment free apiary started in 2010. 20+/- hives