Use rice or a desiccant silica gel or any other molecular sieves . Remove any and all foreign material to stave off any sort or disease. Typically seeds are fertile as soon as the drop. Although I do believe in the drying method and recommend it. The dry environment prevents the hormones from depleting assuring the most viable specimen. Only mature seeds should be kept. Organic seeds are boasted as being the most fertile with the highest germination rate. This seems to hold true at least to me . Although I cannot provide scientific/evidence data to confirm. These are just my opinions and my interpretations of thus said data could be flawed and my statements erroneous but I believe them to be true. Other opinions are welcome and cherished..
doc