We have a beautiful pear tree over 30 ft tall that we'd like to keep but the birds and squirrels cause the pears to fall before their ripe and attract the (opossum, raccoon, rats, cats, dogs, armadillo (those are the ones we know about) from the nearby creek and the rotten ones attract the roaches and I was planning on cutting the tree down this morning but thought I'd try to find out if there was a way to make the tree sterille so I could leave the tree and cause it to not make pears. Thanks, Dan