>>2440576my granfather used to do it. do it in our garden from time to time but your scale must me a million times larger. just dig in a bowl so the edge is level with the ground in the evening after it rained. they come out from the rain and go towards it, fall in and drown. usually get around 20 per bowl per night that way, but that's probably not very good for your size.
>>2440596that would only work if you've found them. if you've found them it's no problem killing them, but you want to stop them from eating your stuff