That's the same with the diatomaceous earth, they won't cross it. I'll go out early tomorrow and see what I can do. I put out bait this evening so they may collect some of it first thing, but after that I propose to wash the concrete area down and start fresh, once it dries, with a light coat of orange oil on the wall and a line of DE at the bottom. (I also put some beer in a shallow bowl to attract any slugs or snails, now that my veggie plants are getting large and putting out flowers).

Why don't you join the Mudcat Gardeners, Kat? Here and you can sign up or I can add you directly if you want to PM the preferred email address). You can upload photos and start a page where you describe your yard. We have a great array of climates represented here already on this thread (I keep hoping some of our Oz members will share their garden stories--they may seem exotic to those of us in the U.S., but the commonality among gardeners is still interesting.

SRS