We've been living in our rented house for just over a year. Since we moved in we noticed the toilet didn't always flush properly after a poo. Sorry for TMI but it would often sit on the bottom of the bowl for a good few flushes before finally going. It doesn't always happen but occurs about once a week. It pisses me off as I hate seeing them in there and it also makes the toilet grim. The toilet isn't very modern so is it something the landlord should do something about?