There are holes appearing all over the leaves of my plants in the back garden. I can't see any sign of bugs, but something is chewing its way through them.
Holes in the Leaves
Certified GKH Gardening Expert
Slugs are the usual suspects when there are holes but no pests to be found. They only come out at night, so they are hard to spot. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/facts-about-slugs-and-how-to-kill-garden-slugs.htm