I find no ethical issues with this in particular, but there is an ethical issue that needs to be addressed with booby traps. should you ever find yourself in need of emergency services, people unfamiliar with your property will need to come on to it to assist you. this could include police responding to a break-in, or EMT's responding to a medical emergency, or the fire brigade preventing a fire on your property from spreading. there's also postal services.
By booby trapping your home, you put them all at risk. If you go about booby trapping your home, at least make sure everyone who enters your property knows that the property is dangerous.
I find no ethical issues with this in particular, but there is an ethical issue that needs to be addressed with booby traps. should you ever find yourself in need of emergency services, people unfamiliar with your property will need to come on to it to assist you. this could include police responding to a break-in, or EMT's responding to a medical emergency, or the fire brigade preventing a fire on your property from spreading. there's also postal services.
By booby trapping your home, you put them all at risk. If you go about booby trapping your home, at least make sure everyone who enters your property knows that the property is dangerous.
Either that, or do it in such a way that you need to actively engage the traps. Ideally when you're expecting company.