I have 4 TBHs in my yard which were all being robbed.
I tried all the tricks in the book before finally closing off the entry holes (1/8 screen) sticking water and thick fall syrup in the hives, and hoping for the best!
This was done Wednesday evening with three of the hives, and Thursday evening with the other.
It's now Friday afternoon and there are still a ton of robbers out there in the yard buzzing all around the hives, searching for ways in, and hopefully getting ready to move on!
They are definitely not my bees.
I've read this technique needs to be done for at least 72 hours (3 days) before opening them up again.
Problem is... I am leaving bright and early tomorrow morning (Sat), which will only be 2 days sealed for three of them, and 1 day for the other, and won't be back until Monday afternoon.
That means potentially 5 days closed, but from the scene out there right now I don't dare open them up by 7am tomorrow!
So... for anyone that has experience with this (I have consulted Michael Bush's website for a lot of this), can I just top up their water and feed in the morning, close 'em back up and hope they'll all still be bees by Monday?! (For sure, if I open them up in the morning, they will not still be bees by Monday - or at least not bees with anything in their hives.)
I was admittedly kind of freaked out by the level of robbing that was taking place, and am now equally as freaked by having them closed up. I guess I shouldn't be if it will solve things. However... all 4 hives have observation windows and it looks inside the hives today like it did outside them yesterday! Highest activity I've ever seen inside a beehive. I assume (seriously hoping!) that will mellow out soon.