That's what I am doing with all these sort of problems here.
hubert cumberdale wrote:
we don't have moles, but do have lots of gophers, in the forest garden i have learned to embrace them. i use them to help me plant, help me loosen the soil, help me with drainage issues, help me with a lot of things. when before they would do nothing but piss me off when i had the wrong mindset. for example the lower area in the forest garden is pretty thick with the white clover right now, the gophers go through and eat some so its not so strong, they also make there little mounds of fresh soil where they plug holes with excess tunnel dirt. this is where i plant my seeds/starts. as the soil is loosened, its got no competition, and well draining, and possibly even fertilized by gopher pee/poop. plants that are planted on the gopher mounds grow at least 2x faster than ones plopped into thick clover.
I like this answer, getting back to principles...
Shove a stake in the ground leaving 2-3 feet above the soil,
Tie an aluminum pie pan to the stake in a manner which allows the pie pan to hang freely and blow in the breeze.
A light breeze will blow the pan, bouncing it against the stake. This has worked for me. My neighbor started doing it, drove the moles into my yard. I repeated it, together we drove the moles into another neighbors yard. That yard is unkempt, strewn with debris, and now full of moles.
I've heard that putting a radio/stereo pointing into the ground is effective, but I also like it quiet.
Any ideas for in the polytunnel where there's no recognisable breeze?
One other method of mole elemination involves releasing rat snakes into the tunnels.
I'll be searching out castor bean oil.