We're a family of four (two adults, one teen boy, one toddler) and budget $200/month for groceries. Our grocery budget doesn't include cleaning supplies (other than raw materials) or paper goods.
We're in the process of eliminating paper goods. We use family cloth instead of toilet paper and I bought cloth handkerchiefs to replace the paper tissues. I bought a large lot of used towels to use in place of paper towels. I use cloth menstrual pads.
We make most of our own cleaning supplies. I use a kitchen spray consisting of Dr. Bronner's liquid castile soap, borax, vinegar, tea tree oil, and purified water. I found it works better than a 409 type cleaner.
We use baking soda as a scouring powder and to clean the bathtub. It works well in the toilet if you keep it up regularly. For the outside of the toilet I use the same spray that I use in the kitchen. The raw ingredients (vinegar, borax, tea tree oil, baking soda) are pretty inexpensive and I usually only have to buy them twice a year.
One way we reduce our grocery bill is to eat less meat. We cook a lot of dishes that have meat as a minor player (soups, stews, stir-fries, etc). We eat veggie meals twice a week - beans/rice are a fav here as are bean burritos.
We also take care to try and limit our produce purchases to in-season fruits and vegetables. We'll stock up when prices are low and can or dry them for later use.
We buy our meat in bulk from local farmers. Each year we buy 20 chickens and either a whole hog or half hog, depending on finances. It's a large investment of around $500 depending upon market prices, but ends up being quite a bit lower than buying from the supermarket.
ETA: Forgot to mention that DD has a dairy allergy so most of our meals are dairy-free, although the guys do consume about 1 gallon of milk & some cheese weekly. We drink only water, tea, and coffee as beverages.
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