The plastic wrap would be no match for a hungry squirrel, so we would recommend using something a little more sturdy, like window screening or hardware cloth (a screen made of metal). If it’s fastened securely to your containers, the critters shouldn’t be able to get in. Don’t use bird netting in this case, as it can snag animals’ feet too easily and won’t block insects.
The plastic wrap would be no match for a hungry squirrel, so we would recommend using something a little more sturdy, like window screening or hardware cloth (a screen made of metal). If it’s fastened securely to your containers, the critters shouldn’t be able to get in. Don’t use bird netting in this case, as it can snag animals’ feet too easily and won’t block insects.