I had a bag of dust at the house for bug control plus I purchased a small container today that had bug control and disease control combined. I was reading the ingredients on the bag and container to see what was in it. So I was on the net today looking up pyrethrins and permethrin. While doing that I came across an article about chrysanthemums. I thought it was quite interesting as I already found an article on marigolds I posted about earlier. I may decide to get some Chrysanthemum plants to place around the deck area.
I really do not think much about dusting. I think I would like using a spray bottle instead. I think the bag or container said it could be put in water and used as a spray. Would make it easier to coat the underside of the leaves.

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How to Use Chrysanthemums for Garden Pest Control
https://www.gardenguides.com/96723-use-chrysanthemums-garden-pest-control.html