We have already purchased a number of these sprays and had thus combat wasps in the roller shutter shaft. Wasps seek out, and this is common knowledge, most slots or holes in order to build their nests in it. Regularly with us in the same roller shutter box. In this article the enclosed Verlängerungsschläuchlein the spray button is missing otherwise. This spray can is set up like a hair spray can, so I can not possibly spraying into the slot. Will keep the thing, now another spray must however buy. Too bad.