Brood Frame Trap - Good Idea?

[Luminos]

Had a look with the Search facility but can't find anything, so, apologies if this has been discussed before...
Received T'orne's catalogue today and am wondering about the viability/practicality of the Brood Frame Trap.
I understand the method of Varroa control, but it seems a waste of brood?
Wouldn't drone brood cull be as effective and less wasteful? Or am I missing something here?

 

[Nic Rhodes]

It is a valuable tool against Varroa that was recommended by our RBI at the weekend. I intend to trial it against drone frame removals every 2 weeks.

 

[drstitson]

Should be ok if done AFTER the foragers responsible for your harvest have been produced but BEFORE winter bee production gets underway.

can also throw in OA treatment between final release of queen and first new brood capping.

BTW cheaper to build own cages especially since easier to have two so that queen just needs to be shifted from one frame to another without faffing.

or consider "horizontal" block where you prop the frame concerned on it's side directly above the QE using a modified (notched) apiguard eke or similar.