How to stop acorns from growing into trees?

Q: I have a massive oak tree that has dropped thousands of acorns. I have raked and raked but there are several hundred left. How does one stop the remaining acorns from growing into small trees with the tenacious roots that defy pulling? 

A: Let’s start with what we know will work: removing the leaves will stop any sprouts from growing.

Use a mower or string trimmer where possible to get rid of new leaves when you spot them. Put pets indoors and warn your family before commencing this job: fast-flying acorns sting like heck if they hit someone.

You could also use a broadleaf weed killer (not Roundup/glyphosate) to kill the seedlings.