1 tbsp of Borax powder (find it in the laundry aisle of your supermarket)
3 tbsp of white vinegar
2 cups of water
1 tablespoon of dish soap
1 drop of essential oil such as peppermint for fragrance (optional)
Pour it into a spray bottle you bought at the hardware store, give it a shake, and you are ready to clean. For windows, use white vinegar wiped down with newspapers, and to disinfect toys and other kids' products fill a spray bottle with non-chlorine bleach (3% hydrogen peroxide) and wipe with a paper towel.
Bonus: Cleaning out harsh chemicals is not only better for your health, it's good for the environment, because you drastically cut back on your plastic use by eliminating all those bottles of mildew cleaner, window washer, bathtub scrub, and more.