C. Letellier wrote: Now there seems to be disagreement on why it works. Some people say the smell simply repels grasshoppers because of all the death of their own.
William Bronson wrote:
There is a different biological control, wheat bran inoculated with Nosema locustae, which is a disease organism specific to grasshoppers and their kin.
Also, Canola oil is apparently an attractant for them.
It evidently mimics the kairomones (pheromones' that attract predators) that cue grasshopper cannibalism.
Casie Becker wrote:I think I understand how those are made. Looks like if you use an inverted funnel to close off the bottom of a container the hoppers climb right up that pole and get stuck. Is having the top be breathable (mesh, basket or the like) matter when you make one, or would the climb into tin cans and Mason jars just as easily?
Paul Fookes wrote:We have guinea fowl and ……they parade around like a group of little old men out for a stroll…..
Beau Davidson wrote:We use traps like this, some purchased, some home-made.
I have used minnow traps.
Matthew Nistico wrote:Therefore, I would be cautious in my application of a d-limonene based insecticide. Don't spray it willy-nilly, or you might damage your crops as well as your pests!