I have soaked them in a water peroxide mix overnite then put then in soil with great results. But i still prefer the paper towel method, i like to be able to see the tap roots when i transplant, if it is a bad seed and you put it in soil right away your going to have to wait a while before you can say it is no good. Usually takes 2 days maybe 3 tops in paper towel, ive had them take a week to show me any signs when put straight in soil. I think it is a matter of preference.