By Emma Mackenzie If you need a pet-friendly approach to killing weeds, you’re in luck as gardeners have found an effective solution – and it’s not vinegar. Weeds can be a nuisance in any garden, but if you have pets it can be tricky to figure out the best approach to get rid of these prolifically growing plants without harming your beloved furry friends. While you may assume that the well-known method of using salt or vinegar to rid your paving of weeds is relatively harmless, keen gardeners have warned online that you should avoid using these household items as a weed killer – as they could …