i have a blocked drain in my courtyard,its the drain that the kitchen waste goes into and the washing machine water.its a very small trap and its completley blocked,ie 19 buckets of water yesturday when it rained,nothing is going down.our house was built in 1880 so its a ye olde house,how do i see if the drain outside are blocked,ive tried chrystals to unblock it,plunging and all matter of bleaches,but nothing,im starting to get scared that this is going to cost me a fortune,can any one help
many thanks
many thanks