Worried the fruit will attract vermin
I would call a professional from your local extension service. The chemicals required need to be applied by a specialist, as they are quite dangerous to humans, animals, and other living organisms nearby.
This article will explain the process:
https://www.gardeningknowhow.com/ornamental/trees/tgen/fruit-tree-sterilization.htm
This link will help you to find the closest extension service to you: