I rent a house with an old fashioned toilet that is extremely prone to blockage. In fact it is so bad, I have to flush after going, before even using paper, then flushing again to get rid of the paper. But sometimes it still gets blocked even when I do that. At my last property it blocked once in 9 and a half years. At this place it’s once a month at least. When guests come round and I forget to tell them to flush once before they use paper, it normally gets blocked again. My uncle, brother and sister in law have all blocked the toilet. I always try to unblock the toilet myself with hot water and cleaning fluid or bleach, if that doesn’t work I try a plunger. If that doesn’t work and it’s a really stubborn blockage, is it my responsibility to clear it? I really am going to a lot of effort not to block the thing in the first place.