eagle 20 is the only real cure for PM.

spray once or twice in veg and you will never see pm again.

It's not organic, but it's immobile (so it wont get in your buds if you only use in veg). It is used in the fruit industry. If I use in veg, I never see the PM in flower.

I fought that crap for 6 months and tried every organic method I could find (neem,serenade,baking soda...) and had environmental controls down, once that crap is in your room... there is no other great way to get it out. A sulfer burner will help, and it's good to use to change the surface environment, but the PM is IN the plant tissue.

you can find small (1 oz) containers on ebay. the $60 container has enough for 2 lifetimes. It takes something like 1/4 teaspoon per gallon, IIRC.

best of luck