> I have no problem with killing them, > What I won't do (and find ethically or morally questionable besides cruel) is to play with them while inflicting pain

> I have no problem with killing them, > What I won't do (and find ethically or morally questionable besides cruel) is to play with them while inflicting pain Nobody here is saying it's ok to torture roaches for fun. The article doesn't say that either. The lasers are for pest control. So you're kind of arguing with the air here.