I don't have any in the house (it is plastic

) but my chooks had a few and some lice (well one chook did) so I have treated the lot with louse/mite powder.
Did it tonight. They hate my guts now.

I think I inhaled a ton of the stuff and was white head to foot......
It is meant to protect them for 6 weeks but I'll check them in a few days in case some of the wee buggers survived.
I read somewhere about taking a blowtorch to a wooden house to kill them?

I understand they can be quite tenacious. Good luck and let us know how you get on.
