I travelled on 26/12/2102 in kanyakumari express train from chennai to tirunelveli junction on 2nd class through a reservation ticket. Within few minutes after train started to move from the station i get shocked by finding every where small cockroaches rats damaged windows and uncleaned dirty toilets with huge bad smell. When i having my dinner i find very difficulty to have my dinner because of these small cockroaches and dirty smell. This is my kind suggestions and complaint as southern railway is a big service provider and lakhs of passenger travel every day southern railway management can take necessary steps to keep the trains clean and user friendly from these cockroaches and rats. I kindly request you take necessary steps and measures to keep it clean and neat. I hope u will do the needful to the passengers.