Not a perfect solution, but I find that birds help get rid of many types of bugs, not all, but some. I put out just enough bird feed to bring them in for entertainment, once the feeds gone they usually stay around for awhile looking for other things to eat.

Also for slugs try beer traps or seaweed as a deterrent.

Good luck

Excellent article! Though possums seem useless, they are very good at uncovering/ eating snail/ slugs , and grubs.

I hear crushed egg shells are good for keeping slugs away from plants, they don't like slithering over the sharp edges of the shell.

Some say, that hemp rope works too, it tickles their belly. May be worth a try, however their tiny laughter at night my be too much.