For the first time ever, the birch bugs have so mushroomed in our birch, that the garden was not to enter (except protective clothing). There were millions, house walls, window recesses, all of the black bugs. Airing was not possible, because in the house then everywhere were these creepy critters. Have the home which treated with the spray, and dead bugs all at once. They lay around in a black drum track. The agent acts as a contact poison, so no need to catch the pests directly, but can spray the surfaces of which fall off the bugs then dead. Due to the masses, the nachströmten, we had to repeatedly spray to the main invasion routes and the tree trunk. Thanks to the thin "snorkel" you can spray into the cracks in the hole up the crawlers. 10 stars from me! Of course, some cans left in it, but no other means was extremely effective!
