Sorry - the link wouldn't work for me, but I have the same problem having four beloved cats with the need to use weedkillers. I have a gravel drive, a large ornamental garden and veg area which I can't possibly keep under control by hand-weeding alone, especially as my OH is disabled and can't help me in the garden. Advice always states to keep pets inside until the area has dried - yeah right! I would have no outside doors left, plus there would be at least one cat prowling somewhere unknown in the nearby fields. I recently hired a gardening firm to help me out in the garden and quizzed them about using weedkillers on my drive, plus quizzed another firm I got to treat my weedy lawns. Both firms said they had never had a problem pet-wise, so I bit the bullet and got them to use it. I had no problems with my cats - possibly because they kept away when the chaps were here, and maybe it dried quite quickly after applying it. What I am doing now is keeping emerging weeds under control by hand-weeding those I can get out easily, spot-spraying such as dandelions and thistles in the afternoon when my cats are snoozing, mulching emerging annuals and grass seedlings with lawn cuttings or shreddings, and covering all those areas that are too hard to weed with cardboard or large plastic bags cut open and weighed down with stones. I also want to kill off the grass in the paths between my veg beds and plan to have cut-open bags at the ready so I can spray a bit at a time and lay the bags down as I go along. My cats tend to keep away when I use anything electrical that makes a noise, so I plan to use my electric shredder whilst I do it. As for your gravel drive, in warm weather the spray will quickly dry, but for that I would use something like Pathclear which not only kills off the current weeds, but stops any more emerging. Just don't spray near a hedge or other plants as it will affect their roots that have grown down under the drive. I hope this helps.