I'm still digging trying to find the ingredients of the permethrin dust stuff and found this on accident.
https://www.valleyvet.com/ct_detail...MIgJSg5t2V3QIVC0BpCh3-RQqoEAAYASAAEgIRD_D_BwE
https://www.valleyvet.com/Library/lib_12254_-Label.pdf
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Have you ever looked up oxine?