Nah, I had some issues with PM on my last grow. Some of the guys in the states are big into bud washing, and pointed me in that direction. Worked wonders. They don't use it just for PM though. They advocate it for everyone.
It's quite simple, but here is what you do:
3 buckets. One with baking soda, lemon juice and room temp water. One with hot tap water. The last with cold tap water. Once you've harvested and trimmed, you take a branch with buds and agitate it for about a minute in the first bucket, making sure not to bump it against the sides of the bucket. You don't want to damage those trichs. Then you just rinse off in the last 2 buckets. Place the wet buds on some paper toweling with a fan on them for about 30 min. Making sure to turn the buds once after about 15min. Then straight on to the drying racks or lines. They dry quickly, and cure well.
I know it sounds counter productive, but the results are excellent.
The idea is to wash off the crap your buds collect over an 8 - 10 week period. It also seems to wash some chlorophyll out, because the water is pale green when I'm done.
Let me assure you that there is no loss in potency, and the buds sparkle with trichs.