I seem to cultivate more snails in my garden than I do plants. I don't mind them. I usually throw them over the front fence, onto the nature strip. But wouldn't you know, some of them cross the footpath, climb the brick wall, heading back to their favourite spot in my garden. I've read about snail homing before, so it was interesting to observe. Found this guide to studying snail movements in your garden: http://www.urbanfieldnaturalist.org/resources/guide-to-snail-homing
snailhoming-printshortedge.pdf