Sadhguru: Primarily It is just one. Another one is simply a matter of size. We approximated that In case the residences are any where between 2000-2500 sq. ft., the Bhairavi Yantra would do. For houses much larger than that, we reported it's not enough and we offered the Avighna. Avighna https://www.youtube.com/@Mahavidyabaglamukhi