Nor would I be comfortable "bopping" rodents, as that is NOT a sure thing or humane. Google (search) humane CO2 (carbon dioxide) euthanasia for rodents,
you can do this at home pretty easily. There are variations using different easily available materials like vinegar & baking soda, & some sites are talking about
feeders, while others are more elaborate instructions for pets, so you might want to look over several sites. (there might also be a 'sticky' on this forum???)