Don't use it. A recent study found that Round Up causes birth defects. If the product is similar you should stay away from it. In fact, you should stay away from chemicals altogether. Make the switch to natural/organic household cleaners and find natural ways to get rid of weeds. You don't want your baby ever exposed to toxic chemicals. There are many brands of safe, effective, natural products that you can find at Target or Toys R Us. BabyGanics is a favorite of mine, Method and Seventh Generation are great as well. We even use natural and organic skin and body care products, especially for the kids so we don't have to worry about them eating the bubbles in their bath etc. My rule of thumb is that is the back label says it's not tested on animals, it's safe. If it doesn't say that, it's got chemicals that had to be tested in bunnies eyes to find out whether or not it was safe, which doesn't sound safe to me, especially when there are known plant-based material that can be used and are completely non-toxic.