Tulsi is most dear to lord. Even touching tulsi remove all sin what to talk about chanting mantra on it. It is specifically used for chanting mantra of lord Vishnu like Hare Krishna Mantra . Keep it with respect in pure place. Don't take it in toilet etc. This product is prepared from original tulsi and it is not touched by machine but handmade. Before chanting take blessings of Guru and lord.