You need to be specific about what you want it for. Pyrethrins are derived from mums & used in multiple products for multiple insects. you posted in wasp & hornets-spray for that is available at a hardware store. if you need the oil for a fogger for something else, there is a product called Shockwave you can search for from PC suppliers on Ebay that are less stringent. This is strong, so technically you need to be licensed & know how/where to use it.
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