Yes Danks, no need for poison...you can spray it with 1 TBL spoon Apple Cidar Vinegar to 1 Litre Water, spray all over the leaves & let dry. I cover my soil with plastic till it stops dripping as it is an anti fungal so I dont want to hurt the fungus in the soil (just in case). This will stop the PM in it's tracks. Has worked for me. Got PM on a few leaves just after preflower, treated her once, didn't come back.