Tips on Using 6mm / Quarter-Inch Mesh

It was 18°C / 64°F today and the bees in all of my hives — even with shrew-proofing 6mm / quarter-inch mesh covering all the entrances — were out in full force.

Quarter-inch mesh covering all the entrances. The mesh slows them down, but doesn't prevent them from getting out or inside the hive. (Nov. 17, 2016.)

Quarter-inch mesh covering all the entrances. The mesh slows them down but doesn’t prevent them from getting out or inside the hive. (Nov. 17, 2016.)


I’ve heard arguments that the bees can’t get through quarter-inch mesh. But that’s not true. If it was, my bees would have been locked inside their hives behind the mesh all last winter. The bees in the above photograph wouldn’t be flying around today.
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Moisture Quilt in a Nutshell

Here’s a quick video that demonstrates the installation and use of a moisture quilt for winter insulation and ventilation.

All of my moisture quilts are built differently because I’ve never put much planning into building them (I have zero woodworking skills). Some are converted ventilation rims that require a rim underneath, like the one in this video. Others have built in rims as part of the design. Some fit perfectly and create a tight seal on the bottom. Some don’t. And it doesn’t seem to matter either way because they all do a great job at wicking moisture out of the hives and keeping my bees dry all winter.

Moisture quilts, in my experience, aren’t necessary in local climates that aren’t particularly damp and foggy and wet. Smaller colonies that don’t produce much condensation from the bees’ respiration don’t always need extra ventilation or insulation either. A piece of hard insulation over the inner cover often does the trick. Moisture quilts can be a bit scary, too, when it seems like half the colony on warm days attaches itself to the bottom screen of the quilt. But for me the pros outweigh the cons. If dampness is a problem inside any of my hives, I know a moisture quilt will fix it.

Empty moisture quilts are excellent ventilation aids in the summer too.

A Screened Hive Top Feeder

Brief April 2019 Introduction: I have no doubt about it now. This is how I use my hive top feeders, with the screen over the middle portion of the feeder, not the reservoirs. I also have screen stapled down in the reservoirs to prevent the bees from getting into them once the feeders runs dry.

Last year I posted a video of a simple modification I make to hive top feeders that prevents bees from drowning in them. I staple screen over the syrup reservoirs and along the bottom edge inside the reservoirs so there is no way the bees can get into the reservoirs and drown.

If the screen above the reservoirs extended over the entrance area of the feeder (the part where the bees come up to access the syrup, whatever part that’s called), then the bees would also be contained inside the hive. I didn’t have enough screen to do all that recently, but I did add some screen to the entrance area of the feeder so it looks like this:

Hive top feeder with screen stapled over the area where the bees comes up. (Oct. 02, 2016.)

Hive top feeder with screen stapled over the area where the bees comes up. (Oct. 02, 2016.)

And guess what? It works.
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Attaching Mesh With Pushpins (Instead of Staples)

I removed the shrew-proofing mesh from my hives yesterday so I could clear out the dead bees that have accumulated so far this winter. I reattached the mesh afterwards with the use of a staple gun that produces a loud bang that vibrates through the hive and riles up the bees. But a suggestion from one of my readers changed everything:

“Would it be possible to secure it [the mesh] with drawing pins rather than staples?”

It’s absolutely possible. I did it today, just five minutes ago.

One of three pushpins used to attach shrew-proofing mesh to hive. (Dec. 13, 2015.)

One of three pushpins used to attach shrew-proofing mesh to a hive. (Dec. 13, 2015.)

The drawing pins / pushpins work just as well as staples as far as I can tell. That mesh isn’t going anywhere.

Three green pushpins (instead of staples) used to attach mesh over bottom entrance. (Dec. 13, 2015.)

Three green pushpins (instead of staples) used to attach mesh over bottom entrance. (Dec. 13, 2015.)

Now I can easily remove the mesh, clean out the dead bees and reattach the mesh without bothering the bees. I thought I might need to find a different method for keeping the shrews out of my hive for next year. Not anymore. The mesh attached with pushpins instead of staples works perfectly. At least that’s my story for now.

Thanks for the tip, Emily.

Moisture Quilts vs Hard Insulation

I’m a true believer in moisture quilts as the best overall ventilation and moisture reduction aid for Langstroth hives in the winter. I’m a true believer because I’ve seen soaking wet hives become dry as a bone within a week of having moisture quilts installed.

An emergency moisture quilt that saved this colony. (January, 2014.)

An emergency moisture quilt that saved this colony. (January, 2014.)

Empty moisture quilts are excellent ventilation aids in the high heat of summer too, allowing the bees to regulate the temperature of the brood nest with less fanning and to cure honey sooner. Moisture quilts are also really cheap and easy to make. Everybody wins.
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Quarter-Inch Mesh Doesn’t Always Knock Off Pollen

July 2019 Introduction: This post gets a little long, but I haven’t edited it down to be more concise because it demonstrates how my beekeeping practices evolve. At first, I just stapled quarter-inch mesh onto the bottom and top entrances to keep shrews out starting in October. Then I put it on just the bottom entrances so the bees could still get through the top entrances with no problems, at least until they began to cluster down for the winter. Then I switched to using push pins to attach the mesh because it’s less disruptive for the bees than the banging of a staple gun and it allows me to easily remove and reattach the mesh when I need to clear dead bees off the bottom board. And some people in Newfoundland only use half-inch mesh to keep mice out because they’ve never had problems with shrews. They’re lucky.

I was surprised to see some of my bees bringing in pollen today.

Honey bee bring in pollen on October 25th, 2015 in Flatrock, Newfoundland.

Honey bee bringing in pollen on October 25th, 2015, in Flatrock, Newfoundland.

Judging from the colour of the pollen, my guess is that it came from Japanese Knotweed. It could be Honey Clover too. I still see some of that around (what a fantastic plant that is). I saw bees from another hive bringing in yellow pollen, probably from Goldenrod, though it seems late for Goldenrod.

This is the first year I’ve used quarter-inch / 6mm mesh to keep shrews out of my hives. I was told to put the mesh on after the bees have stopped bringing in pollen because supposedly the mesh opening is so small that it knocks the pollen off the bees’ legs as they go through it. But that’s not exactly true. Every bee that came in with pollen today at least had no problem getting through with the pollen still intact. So…
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Quick & Dirty Winter Preparations

I’m a huge fan of the moisture quilts introduced to me by Rusty Burlew because they keep my bees warm and dry all winter long better than anything I’ve used before. But for my first two winters when I kept my hives in the city in a relatively dry climate, hard insulation over the inner cover worked fine. For people who don’t have much time, money or carpentry skills, the winter preparations I demonstrate in this video are better than nothing.

I’m not saying this is the best winter set up for a hive, but I have a good sense of my local climate and I think this minimal set up will work out okay.