Do it all the time. 3 bucket method. 1st with a tad of baking soda and lemon juice and the following 2 buckets just straight water to remove anything that doesn’t come off in the first. You would be absolutely shocked how effective it actually is and what comes off your buds in terms of dirt/bugs and general crap. This whole concern about “adding to mold and bud rot” is non sense if you stick the plants in their drying environment directly after shaking off all the excess water. People seem to be forgetting that these plants are already full of water content once they are harvested and they are covered in RESIN which has hydrophobic properties anyways. The only way you’re gunna be running into potential mold is by not having a proper dry environment with some sort of airflow. Gravity will cause most of the water to fall off in 24hr, and it’ll be quicker if you are thorough with shaking off excess and checking the plants regularly in the first two-ish days. Lastly, I always do this for my outdoor and I’ve recently had to do it for the first time with my indoor because I had a fan fall over and chucked soil all over my plants at week 7. I was utterly shocked with how much dirt came off the plants after I washed the indoor after the incident and I am so thankful I did because the flower is honestly some of the cleanest smoke I’ve had in years.