Last year everything leafy I tried to grow got eaten down to the stalk (including potato leaves!) by SOMETHING. My Mum thought it might be caterpillars but I couldn't see any, no slug or snail tracks. I have found these big whitey grey grubs (I guess penny sized, maybe a bit bigger) which I think must be the culprit. Maybe assisted by woodlice??
But how do I get rid of them? I'd love to grow veg but was a bit demoralised by last year.
Any advice gratefully received.