I thought that the slimers I removed would soon be replaced by new ones, eager to eat all my herbs, but so far I have not seen any snails and only 1 slug! I am looking every night and they have not returned :)
Tonight it is raining, this must help the slugs and snails propel themselves across the ground quicker. I have a feeling I may have some visitors tonight, and will do the same as before. Collect them up and place them far away from my plants!