How can i get rats out of my house? We support local and global environmental initiatives. Dump the hot water down the drain so that it can melt away some of that grime and any hardened grease if this method appears to work for the clog, continue doing so until you've got the drain cleared! For / emergency service call ---. Very good service throughout both technicians were fantastic! we would happily recommend halsalls to friends and family thank you!.