@@kero00666 Sorry, it is not the answer. You may not fully understand the how cockroaches reproduce. You may not understand how strongly cockroaches survive in old district with harm weather. I was in Michigan for over 20 years, no such issue. Actually, I feel so sorry to kill them. But, as far as I can remember, just one “egg” breeds 16 little cockroaches. I deeply feel sorry for them when I kill them.
