Silk worms at harvest?

[Kids Kid]

I want to find out more about the silk worm.
Where do they come from, how do they get to my plants when I monitor them 24/7?
I have 5 or 6 female plants that made it through the summer and are producing some fine buds.
But every day during the process of curing them I am still discovering silk worms in the tops & buds that are curing.
My goal is to discover how they are getting on the plants during the season and to try to keep this from happening next season.
I am harvesting approximately 6 females plants out of approximately 27 plants that I started the season with.
It's quite an experience to watch and research as the grow process happens.
I had my experience with the spider mites last winter which was my first indoor attempt after becoming a patient.
This is my second season on the outdoor grow since being legal now to do so for 2 years.
I want to be ready next season and the silk worms seem to be my most evident adversary of the harvest, that I can see to date on an outdoor grow.
I have searched and browsed the internet for silk worms but only get a history of them and the silk industry.
So here I am looking for answers? Any one know where the silk worm originates from when it has to do with cannabis plants?

[Muddy Waters]

Silk worms are caterpillars, are they not?  If so this product may be effective against them.  http://www.gardensalive.com/product.asp?pn=8797.  I've used it for years to control cabbage worms on broccoli, brussel sprouts, cabbage, etc.  When sprayed on the plants the beasties ingest it and a bacteria it contains kills them.  I also used it this year on some of my plants that were getting some caterpillars on them.  If you want to verify it will work on silk worms call their customer support.  They are very helpful.

[DevilDawg]

They come from moths that are indeginous to China..so dont know HOW you got them...that is a first for me