Bacillus thuringiensis
It is a natural occurring bacteria which is a systemic deterrent (makes plant taste bad to bugs/makes them sick). G00gle will find it for ya.
Maltodextrin is used as a horticultural insecticide both in the field and in greenhouses. It has no physiological or biochemical action. Its efficacy is based upon spraying a dilute solution upon the pest insects, whereupon the solution dries, blocks the insects' spiracles and causes death by asphyxiation.
Anyone have thoughts on this as i have some in the house.
Fascinating! Seems pretty spider-mite specific, not that that's a bad thing. Just that "[v]ery limited data suggest some reduction of whitefly and aphids may be achieved."
Another tool in the tool kit. @Obi 1! Not sure it will work on your caterpillars though I just bought some BT for the summer .