A friend and I were thinking about an item that you place that prevents creatures from spawning within it's radius. Would probably be best if only 1 or 2 could placed in the server to prevent breaking the game. We built our base in the log near the ranger station close to the center of the map and larva and grub kept spawning inside digging around. It's more annoying than game ruining, however; it would be nice to have an item to prevent this or some other way to prevent creatures from spawning.