I have used one quite a bit this year. I guess how good it is will be determined by what kind of germination I get, it puts the seed a bit deep,and I've read on here that deep seed equals lower germination, but I like to believe it also equals safer, more disease resistant roots. To answer some ?'s, No mine has not clogged up, ever! I love mine because it allows me to get in brush, on slopes and through leaves without disturbing the ground and undergrowth. My limited success with growing ginseng has been to plant thin, in underbrush and disturb as little as possible and this allows me to do this perfectly. I plant maybe a half pound in a half day (4 to 6 hours), but I'm probably a little slow and I don't just stick seed after seed in close proximity-prolly less than a pound an acre.