<img border="0" hspace="10" align="left" style="margin-top:3px;margin-right:5px;" src="https://timesofindia.indiatimes.com/photo/95927714.cms" /> After removing the encroachments from all the major drains in the city, the Patna Municipal Corporation (PMC) has begun post-monsoon drainage cleaning drive covering all drains, potholes and catch-pits.