Our lawn has always been awful. Damp clay ground meant that over the years we have had mushrooms grow, moss, thistles and now dandilions. The grass was destroyed last year after a trampoline had hidden it from sunlight for 12 months so we decided to grow a new one. It has come through really well but so have the dandilions! In fact almost 50% of the garden are covered in them. It is such a big job to get the buggers out that we are wondering if there is a good weedkiller we can use instead? Only reason we are cautious is because the grass is still quite new (planted 6/7 weeks ago) and we don't wasnt to kill it. Any ideas?