Was going to come here and ask is there a "natural" weedkiller anyone knows of that actually works. Sorry to say but two week old urine did NOT kill my weeds I got the cyber-wanders and ended up at Gardenlen's tips page of his site and found this (Len, if you want me to remove this and just provide a link just let me know, k?) Have you used it? Does it really work?? Cos I am going to work every day now the weeds in our scoria courtyard thingy are getting on top of me. Also, if it is effective I'd be willing to lash out on bigger amounts of ingredients so as to do a fair bit of the cape weed. Len's weedkiller recipe>>>>> WEED KILLERS Mix 1 gallon white vinegar, 1 cup table salt, and 1 tablespoon dishwashing liquid together and spray on weeds. To do so, remove approximately 2 cups of vinegar from the jug, pour in the salt and dishwashing liquid, then return the 2 cups of vinegar to the jug. Close the lid and shake to mix. Transfer to a spray bottle (after shaking to mix the ingredients) as needed. It works as well, if not better, than Chemicals, but is much cheaper. Be careful, it will kill whatever you spray it on! If you go purchase vinegar, 10% acidity, 20% acid would be better, and spray it on the weeds in the heat of the full sun, you will have an effective weed killer.