You’ll have to stomp them, because bug spray is becoming useless:
Cockroaches are quickly evolving to be resistant to pesticides and could soon be impossible to kill with chemicals alone, according to a new study.
Researchers from Purdue University found that some German roaches, which are one of the most common types of cockroach in the UK, could pass down their resistant genes to their offspring. The findings were published in the journal Scientific Reports.
Evolution in action. (Dammit.)
During the study, the researchers tested three different types of insecticides on cockroach populations in apartment buildings across the US.
They did this for a six-month period and found that the number of cockroaches either remained stable or actually increased.
Cite: DOI: 10.1038/s41598-019-44296-y.
And if you resort to stomping, here’s your theme music: