Never thought I would post a thread like this, but I'm now doing the busy houseowner stuff! We seem to have an invasion of dandelions. They are coming up through the pavement that leads to our house and up through the patio so I'm looking for something that will destroy them without ruining the paving slabs. We also have more dandelions than grass in our garden now with some very high! Is there a good weedkiller that will kill these without ruining the grass?