Jeyes fluid drain unblocker is a simple way to unblock drains it cleans and deodorises drains in 30 minutes with a degreasing action. And, make sure the engineer takes a good look at the internal components it's not unknown for leaks to cause havoc after leaking on other metal components, it's very likely there are other parts that have rusted and need to be replaced. If a blocked drain is making your life a.