I still can't agree that you call bees and bumblebees "pests". Without these kind of insects we simply wouldn't be able to grow fruit-bearing trees!

Read - for example - here or here.

In parts of China humans have to pollinate flowers manually because of a lack of bees (as a consequence of all our poisonous insecticides)!

If you make a post about it, I wonder if you really can describe my words in the exact same way I mean them. I think you should first seek various articles about bees, bumblebees, flies and beetles as pollinators of our flowers to get some broader knowledge concerning that topic.