Grubs in raised beds – how to attract and remove the beetle larvae. Distinguish between harmful and beneficial grubs.
You can't just kill them because some are protected. Chemical control of beetle larvae is usually unsuccessful. Collecting is the most effective measure against grubs However, if it is the larvae of May, June or garden beetles, you can either collect them or, depending on the type and size, fight them naturally with nematodes. This has proven particularly useful for garden leaf beetles.