You gotta have a heavy duty snap trap to kill a healthy, adult squirrel. A rat-sized trap at the very least, no mouse traps. There’s also the same problem as with the glueboards – partially caught squirrels will chew off a leg to get free.Click to see full answer. Besides, will a rat trap kill a squirrel?Without modification, rat traps can still kill squirrels if they trip the trap just right, preferably behind the skull and the odds of a successful kill appear to be somewhere around 40-60%.Additionally, is it cruel to drown a squirrel? Under the 2006 Animal Welfare Act, once an animal is under the responsibility of a human they have a duty not to cause unnecessary harm. ‘Pests’ like the grey squirrel can be killed in a ‘humane way’, such as a blow to the back of the head or shooting, but drowning or beating the animal to death is illegal. Also to know, can you use a mouse trap to catch a squirrel? Snap traps, commonly used for catching mice and rats, work just as well on squirrels. Squirrels are naturally curious and will poke around inside anything they find. A little bait can be added to lure them in faster, but either way, once they go inside they’ll trigger the trap and be killed.What food is poisonous to squirrels?Corn also turns sour quickly and grows mould so make sure that the corn is good to eat before feeding. Mouldy or sour corn can be toxic and even fatal to squirrels.