i have just been out removing the end nest box area of the little bantam house as it had started to rot { not even a year old } its one of those cocoon tpye ones and while doing so i found a few red mites which were soon killed then the aera sprayed but i then decided to check other pieces of the coop that i had removed and i took each slat of wood apart and hiding right within each slat were red mites so even if you think you have sprayed well be warned unless you strap out every srcew holding all slats together then you wont get rid of the probelm i thought i sprayed and treated well but obviosuly not , i'm part tempted to take every single piece of the house apart and completely re build it but that would take me forever to do .