Moles Leave my garden alone.

[JamesL]

He owes me a call later today, I will inquire...

[JamesL]

Originally Posted by snippits

During the plowing, tilling, raking rocks and debris, and planting I only saw two grubs total. I will treat the garden area and the yard around it for grubs this fall. My garden is heavily visited by robins, black birds, and blue birds, and I am sure they have put the hurt on grubs and worms.

@JamesL

Could you ask your father what brand the windmills are?

Thanks everybody for your advice.

Alas he does not know the brand. Current versions are at least 5 years old purchased at local hardware store. He did comment that they require maintenance- periodic greasing of the bearings.
As it is just vibration transferred to the ground, you could spend an hour and build a dozen for almost no cost.
This is in Japanese, but the pictures are all you really need.
http://plaza.rakuten.co.jp/yuriccho/diary/200904180000/