yes - Weed and Feed is the most common - if they are still allowed to sell it...
there are herbicides that kill plants other than grasses - UNFORTUNATELY, they are not good for you. or kids... or pets...
If I need to use an herbicide, I use RoundUp and very small amts. directly onto dandelion leaves etc. It interrupts photosynthetic pathways so it kills all plants - be careful or you'll get a dead spot of grass. But it is rel. "safe" - you can use it in an aquarium. Others won't use any herbicides & pull all weeds.
FYI:
LandscapeOnline.com :: Article : Are Herbicides Safe?
I would plant or overseed the grass, and if I absolutely had to use something harmful (too many weeds for Roundup or manual pulling), have a pro come in and spray. The instant they arrive, drive away with all dogs/kids/etc. & take a nice vacation. When you get back, keep every body off the lawn for a day, a week, or 3 years - depending upon your level of paranoia.
the timed-release pellets of chemicals in Weed & Feed will create a chronic exposure condition - it's up to you to decide if you want that or not