m0useanswered grow question 9 months ago I do bud washong on all my outdoor grown weed, I wash them the same day they are cut, I dry them whole or in main branches. I spin them out in the shower and it does them fine. I will say it can lower the terps a lot. Its not 100% way to get them off but also before harvesting try spraying them in the shower with a jet or something to knock them off.
Google on how to bud wash, there are normally 3 buckets filled with various things from backing soda to lemon juice and plan water.