While I agree it's likely, 'common sense' is also not science and we shouldn't take as a given that they are an integral part of the food chain. Pest species do

While I agree it's likely, 'common sense' is also not science and we shouldn't take as a given that they are an integral part of the food chain. Pest species do exist. Saving lives is generally a strong motivator, so it's worth considering the possibilities.