What To Do With a Colony of Bees or Wasps

We have honey bees Apis mellifera living in a crevice between our attic and bedroom, and another colony living above our garage. We have social wasps Vespula sp living in a crevice in the wall above our back door. What are we doing about it? Nothing. And here's why:

The wasps and the bees don't have an amical relationship. When individual bees get old and start staggering around the courtyard the wasps are right there to 'clean up'. But neither wasps nor bees are interested in us, and they rarely venture inside the house. In both cases they installed themselves before we realised what was going on. Then it's too late. Ours is a very typical situation, and luckily in both cases the insects have chosen places where they can just get on with things undisturbed by us. Really the only time social insect colonies need to be moved on or eradicated is when they move into awkward places like chimneys and the space between windows and shutters. Fortunately bumble bees rarely make nest site choices that bring them into conflict with man, but social wasps (paper wasps, 'yellow jackets' and the like), hornets and honey bees quite often do. It doesn't help that people are scared of them, a few people are dangerously allergic to them, and your idea of an awkward place might not coincide with mine.

 

A swarm of Honey Bees moving in to the gap between our bedroom and the attic.

Removing colonies alive is possible, but messy and expensive. Your house insurance might cover it if you are lucky. So most removals are done at the expense of the lives of the insects and they are poisoned before the nest is removed. To do this legally in the case of honey bees you need to establish there is a genuine safety risk for people. A good professional pest controller should mostly refuse to eradicate colonies.

 

My apiarist friend Bernard removing a colony of Honey Bees Apis mellifera (Fr. Abeilles domestiques) from a window.

So now you are asking 'Why remove the nest if the insects are dead?' Well, a colony of dead larvae is an easy target for other predatory insects. An abandoned store of honey is easy work for other honey bees to rob. They don't know it's poisoned, they will be poisoned, and their colony that they take the bounty back to will be poisoned in their turn. It is not legal to contaminate the food chain and so the entire nest needs to be removed to prevent it being robbed.

 

European Wasps Vespula germanica (Fr. Guêpe germanique).

You would be mistaken to think that blocking access to the nest is sufficient to protect the food chain. It's virtually impossible to identify and effectively block all the possible access holes. I know it would be at our place, with its crumbling mortar, decaying timber and worn stone walls. Added to that, with the current cycle of drought and flood the building will move and gaps will appear. Once one bee or wasp has found the free food, the whole of their colony will arrive to collect it within days.

 

One of the wasps preying on an old dying Honey Bee in our courtyard.

For what to do about a swarm of honey bees ie when the colony is out in the open looking for a new home but not yet installed, read my blog post: What to do About a Swarm of Bees.