Frilly I looked on Amazon and the big bag is 52.00 for 7,000 sq ft. That should cover your area.
I was told that if you get rid of the grub the moles will leave. They told me the moles were there because of the grub. I did not buy anything to get rid of them because I have a dog and do not use any of the chemicals for lawn, weed, and bug killers. I just covered the holes and kept the lawn very low I think because of the all the mowing and riding around on my tractor they left my noisy area. I love riding around on my lawn mower.
I use the tractor to get around the property moving mulch and plants all summer so every day I am on the mower. It is too much land to walk from the front to the back lugging mulch and plants.
