[iii_scanjet_iii]

The best non-insecticidal method is to put cyanne pepper around the bed. This will agitate them and they won't return. If you want to get nasty you could spread some human hair around there this causes their skin to break and bleed. If you are hard core you could put up an electric fence depending on your garden type. A standard electric fence for a small garden will probably run you like 100