Sadhguru: Primarily It is just one. One other one is simply an issue of measurement. We estimated that When the homes are anyplace in between 2000-2500 sq. ft., the Bhairavi Yantra would do. For homes much larger than that, we explained this isn't sufficient and we offered the Avighna. Avighna https://www.youtube.com/@Mahavidyabaglamukhi