Trouble with beer traps is you get at most 5 or 6 at a time. I literally have 100s of slugs in my veg patch alone. I've used tons of coffee grinds, which have kept them at bay to a certain degree, but this only works when they're dry. I collected over 100 yesterday morning, then again at 10:00 pm I went out & collected another 80 odd. This is every day!! The very mild winter and all the rain we've been getting just seems to be the perfect conditions for them. As I say, this is only my veg patch. My flowers are infested, and my lawn is totally covered. I could probably sustain the entire population of blackbirds and thrushes on my lawn alone!