Something invisible is chewing up various tender herb-like things in my house: basil left in a glass, coleus cuttings, etc.

The orchids, so far, don't seem to be affected. The critters also attacking a dish garden I made up for my mother-in-law, which is now in her house. This problem has appeared since my first shipment of worm tea, of which I gave a small dose to the dish garden. Is it possible that there are larvae of something small and hungry in the worm tea. Has anyone else had problems of this sort? The source was Our Vital Earth. -- Bill