The crabgrass and dandelions just won’t quit, marring an otherwise lovely lawn. You’d like to use weed killer but hesitate because you’ve heard — and observed on lawn sign warnings — that the pesticides and herbicides applied to grass are not safe for dogs.
Four weed-killing ingredients that you also cook with
The four substances listed here will all kill weeds without harming your dog. You can use them straight from your kitchen or, in most cases, buy products in which one or more of these substances are the main ingredients. Keep in mind that all of these items are non-selective, meaning they’ll kill lawn grass, too. You want to apply them just to weeds themselves.
Making sure weeds never have a chance
Along with killing weeds that have already popped up, you can help insure that weeds don’t grow in the first place by applying a safe “pre-emergent” that keeps seeds from germinating. One effective substance is cornmeal. That’s the active ingredient in Preen. It’s more expensive than a number of other weed killers — a 14-pound container of Preen Extended Control Weed Preventer retails for almost $44 on Amazon. But it does the trick. If you use it on vegetable gardens as well as lawns and flower beds, it’s even safe to use up until the day of harvest.