Please can someone help? Something has decided to start eating my Sarracenia. I don't know what it is. I have ruled out slugs and snails as there are no tell-tale trails. There are no silk webs or threads so some types of catepillars are also ruled out. I've checked the plants carefully and couldn't find any signs of anything that might do this. So far, it's had a go at 3 pitchers over the last week. This is the kind of damage it does.
Do you have any idea what it could be and, perhaps more importantly, how to kill it?