Get copper tape and put it around the base of your raised beds as their slime reacts with the copper stopping them proceeding any further. CC: nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqqzvuevvsrm3rvc88qdltg77vrxj9vz82ljd5dhaf8shw9h4uvekqt9w0cp