Ideas on the copper wire critter deterent:
#1) For inexpensive copper wire, bust open one of those unused chargers and take apart the transformer; good for maybe 90 feet of wire. (of the 2 gauges of wire in these, only the heavier seems workable for slugging.
#2) If you go for #1, you have to scrape the insulating coating off the wire to expose the copper.
#3) Go electric!

Collect enough transformer wire to go around the enclosure twice. Without stripping it, make 2 strands of equal length and fasten to top of enclosure so they run parallel and about 1/2" apart. Gently scrape the insulator from the top surfaces of the wire, and connect the wires to a small battery, one wire to plus, one wire to minus. Any conductive critter shorting the two will get what for!
To my own garden. Given the rising price of food, I have enlarged my garden area and included more variety of veggies. We're having a wet cold Spring, so all that's really going outside so far is a few radishes just getting secondary leaves. I planted more radishes today, more carrots, & more corn. I have inside starts of tomato, cucumber, and lettuce.
My cornucopia so far: tomato (3), carrot, bush beans, radish (2), Indian corn, cucumber, acorn squash, lettuce, sunflower, millet, garlic, & wheat.

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i think you have to judge people's opinions not by their words, but by their deeds.
~ douglas r. hofstadter ~