The procedure is extremely simple and the Mantra does not have to be Mastered. The practitioner has to take a mug of water, keep it in front of him and chant this Shabar Mantra 108 time, using a Rudraksha Bead counting Mala. While chanting the Mantra the practitioner has to keep looking at the water, this will infuse the water in the mug with the frequencies of the Mantra.
ओं गौरा के पुत्र यदि गणेश तिनको वहान सौ एक दन्त दुहाई का ठउतिर चौड़ा पन्त रतोरि फल मारि काटो महाव के जटा फाटे मेरी भक्ति गुरु की शक्ति फुरो मंत्र ईश्वरो वाचा ||
Om Gaura Ke Putra Yadi Ganesh Teenko Vaahan Sau Ek Danta Duhai Ka Thauatira Choudaa Pant Ratori Phal Maari Kaato Mahaava Ke Jataa Phaate Meri Bhakti Guru Ki Shakti Phuro Mantra Ishwaro Vaachaa ||
The mouse is the vehicle of Ganesha and the Mantra invokes Ganesha to help you in removing the rats and mice from your home.
Another similar mantra for the same purpose given a few years back can be seen - Here.
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