Our neighborhood has a lot of feral cats that like to roam and sprawl themselves in our backyard. They spread their fleas on our lawn. We have a 7 week old pit bull puppy that is being trained to use the lawn to relieve himself. The training has been working, but unfortunately, the fleas come back inside with him. I am going to begin using Revolution on him but what can I do about our lawn? I heard baking soda works.