Janeu is used in each and every pooja like Ganesh Pujan, Maa Laxmi Pujan, Satnarayan Paath etc.
Janeu is a consecrated thread that is worn by every Hindu Brahman. It enhances purity and gives long life and divine bless.
Janeu (Cotton Thread) is a consecrated thread that is worn by Hindu Brahmin of India. This holy thread of 'Janeu' suggests the development of a male, from a young boy to a man.
To attend or perform any auspicious ceremony, one should wear 'Janeu' hanging from the left shoulder (Upaviti). For attending or performing inauspicious event, one should wear 'Janeu' hanging from the right shoulder (Prachnaviti).