My traps are most definitely attracting a whole assortment of insects! The earwigs are stuck on the bottom of the tins among slater beetles and millipedes and bloated grey slugs. Cue evil laugh... Actually, it's quite revolting but strangely gratifying to see how much has fallen into the traps. I think it will need a little more time to see if it's actually working to protect my plants or not. The best way will probably be to buy something cool and expensive and plant it somewhere especially vulnerable, with a trap strategically nearby, and see if it survives.