I haven't tried it. I gave up on using stored pollen. I'm after a very specific effect, which is < 10" plants like the "Betty Boo" autoflower you can't seem to buy anymore. I've got a cloned strain of Northern Lights that will do it sometimes. Got one down to 9.5" at harvest time! But it's not always that short (yet). < 10" is suitable for a Levin 36W E26 LED bulb, clamped to a kitchen table, and pointing downwards. Believe it or not, that's all the light it needs, as proven by growing some that way, and some under full California summer sunlight. Got a bigger yield from the LED bulb running 24/7. (And no miserable bugs...) But if it gets taller than 12", it gets too close to a light clamped to a kitchen table and it becomes hard to do 6 of them at a time (the California limit). So I don't use pollen anymore. Can't control the results.