Big,
If your two pears are Bradford Pear trees, yank them out and burn them. My wife talked me into planting a couple of them 10 years ago. Big mistake. Google Bradford Pear and you can read tons of information about why they are a poor choice.
Bud
Kieffier & Moonglow Pears, I went outside to take a shot at a Nuisance coyote and figured I'd take a look at the tags Penny left on them. some of the fruit trees are picky as to the types of pollinators needed to produce.
just to let you know I JUST DIG THE HOLES, Penny has the Green Thumb