Travelled by 12052 Madgaon Dadar Janashatabdi Express on 31st October. It was the one of the dirtiest train I have ever traveled with. My last experience with this train (around 4-5 years ago) was very nice,hence it was more shocking for me. There were around 3-4 cockroaches just around my seat,so god knows total how many of them were there in entire coach. Date of last pest control was 2 months ago. As Sun set later,so many other insects made their presence in that train. I am sure that if Nat Geo or Discovery channel shoot one entire episode in this train,they will find more diversity in living organisms here than any jungle.