Moles have left large holes in my yard. Should I fill with stone?

You can if you choose to, but moles will just dig around the stones or rocks. Now I don’t know if this is true? But I’ve heard that mole’s Blood won’t clot. So if they get cut they bleed to death. Some people suggest putting broken glass in their tunnels. So far I just set traps everywhere I see a mole mound or tunnel and wait! What I really want is the propane system that lets you put a certain amoun of propane in their tunnel then it’s ignited making a small explosion to kill them. Haven’t seen a store bought system in a while though. May have to make my own!

That will not stop them.Try first applying a grub control, then use the castor oil method from Tomcat

you'll just have a yard full of rocks ! Mole traps work best

Not sure if it works or not, but I read somewhere if you put juicy fruit chewing gum in their holes they will eat it. They can not digest the gum therefore they die.

If you have a cat, or know someone who does, lift a flap of grass from the mole's tunnel and shovel in some used kitty litter. Replace the flap, and walk away. Cats are a mole's natural enemy, so they will not stick around.

https://www.improvementscatalog.com/RoomForImprovements/get-rid-moles-using-home-remedies/

https://www.livestrong.com/article/131476-how-remove-moles-yourself-with-castor-oil/

Elizabeth, you said you have large holes in the yard, moles are small similar to the size of a mouse. They dig small holes, no more than 2" in diameter. If the holes you have in your yard are larger you are dealing with a larger animal, perhaps a goffer or a much larger groundhog (sometimes called a woodchuck). Researching the correct critter will help find the proper solution. Good luck!

This area in southcentral Kansas had a real problem with moles the past decade. Many things have been tried, but what we did seemed to work the best and the fastest... STOMP!

Every time you find a hole or feel the tunnel under the ground, stomp the heck out of it to shut it off/close it up! Yes, they re-dig or dig around, but after so long they get the message and move on.

It costs nothing and gives you a little exercise!