Last year I made my first proper attempt at gardening with raised beds. The slugs came, they conquered, they fucking decimated the lot; then the plants went all unhealthy and unappetising. The snails also played their part. So these are my raised beds last year before I put anything in:
And this (following picture) is how they look today after some tidying/improvements. I've managed to create some beautiful loam-esque style soil from the abundance of clay available in my garden. The plants you see are mainly my left over winter/spring salads (I planted them far too late). I've currently got mibuna, tatsoi, kale, sorrel, red giant mustard, chard and parsley.
Close up:
Close up 2:
Right, now for the interesting part. I found a link at instuctables for creating an electric slug fence.
The two stainless steel wires in the above image run parallel to each other around the perimeter of the raised beds. They are then connected to a 9V battery, which is located in the old box of Aldi paté. When a slug crosses the first wire nothing happens, because it hasn't completed the circuit. When the slug makes a connection with both wires, however, it receives a small, non-lethal shock and moves away. This is a video of the slug fence in action.
Apologies about the abrupt and shaky nature of the video. Ironically I couldn't find a single snail in my garden today (we usually have hundreds), and I was only able to find a single slug. Interestingly, the slugs seem to be instantly conditioned to avoid the wire after a single exposure (so I struggled to take a decent video as the slug knew what to expect).
I've tried all kinds of "natural" methods for slug control, unsuccessfully, and I'm not comfortable with killing them. Living in the cold, rainy and cloudy lands of Northumberland they are a serious problem and had I not happened upon this piece of ingenuity, then there is absolutely no chance I'd still be attempting to grow my own vegetables.
So yeah, if you suffer from slugs like I do, consider this! The materials are pretty cheap. Oh and also, the first raised bed which I wired up is now completely free of slug/snail damage. I expect the other to follow suit.
I'll keep you's updated on my endeavours.