Re: Leaving a frame feeder in?
Unless you have equipment as tight as Lauri's you might find them full of water when you go to move your hive or nuc. Which can be a really stinky mess.
I don't see what's so bad about comb built in the feeders. It gives bees something to crawl on. And if the comb is full of honey all the better. This doesn't happen w/ Mann Lake Feeders w/ the Caps and Ladders, as shown in Lauri's photo.
I leave mine in. I always know where they are.
Mark Berninghausen Let us live more in our hopes than from our fears.