Read labels and use your common sense. It could be well worth the expense to hire an indoor air quality expert to test your house for a range of hazards and your neighborhood for possible wind-borne exposures. Here's how I translate the GRAS guidelines for cleaning. Use vinegar as an antibacterial agent. Use baking soda mixed with soap as a great soft scrubber.
Most people have practical concerns about living without standard commercial products.
These are all legitimate concerns, but basically, I suggest you just jump in and try it. I've never once had a person tell me they've regretted it. Mostly, people tell me that living in a less toxic home improves their sleep, makes their babies less fussy, improves their children's concentration, and improves their sense of well-being. Until a precautionary principle is implemented by all of industry, and products are never put on the market until they are really, truly proven safe, we have no choice but to take charge of our own families' health. I try to compost our kitchen waste, but during the winter here in Minnesota, the compost pile pretty much freezes solid.