Glass of water method with some hydrogen peroxide sprayed around the glass is 100% with all my seeds now for the last year plus would recommend this for anyone doing autos...seems to be a fool proof method are this point with most seedbanks autos, won't do it any other way at this point have done around 20 some beans this way now and haven't had a fail yet...thank you for these amazing strains my gfs crohn's disease has been a big change to everything in our lives and this makes it much more manageable that's for sure!!!