Does anyone know how to make the weeds called horses/mares tails die off compleatly. Under differant peoples advice I've tried 1 Pulling them up - they come back 2 Chopping them down - they come back 3 Boiling water - they come back. 4 Boiling salted water - they come back. 5 Kill the ground with salt - they come back I've got to be very careful about weedkillers, cos I have a dog and there are lots of cats that go in the garden. They are just coming through and in a couple of days the garden will look like a prehistoric jungle. Any advice that doesn't involve a flamethrower will be greatly appreciated.