Lyndsey, do you have another box to put this trap in? I would not put it in the box where your blues are trying to build a nest, as you would probably catch one of the blues. It is very helpful to have 1 or even 2 extra boxes to trap these HOSP in – keeps them busy at a different box than where the blues have a nest. After the HOSP finds a mate and they just have the starting of a nest is the time to catch them. If the blues ever finish their nest & lay an egg, this is the time to put up the sparrow spooker, which is a good deterrent for HOSP, but not always 100% effective. The Sialis website has good info on this.
