Only if you are around to keep an eye on it, it’s peaceful on line (eg: non barking and non-aggressive!) and all pick-up rules still apply. The line must be located so as not to interfere with your neighbors, and the lawn can’t be torn up. (Some dogs are perennial diggers!) Please do not leave screw in tethers and lines lying on the lawn, as it’s one more thing I have to deal with when mowing.