Fill garbage bags

Make sure you fill the garbage bags up before throwing them out. You will waste more money on bags if you don't.

Free bags

You can get free bags if you eat at fast food places. If you order to go, save the bags they put the food in when you get home.

Use grocery bags

If you use those plastic grocery bags for shopping, you can save money by using them at home. When you get home and take the food out of them, you can use them as garbage bags or for the small trash can in the bathroom. You never have to buy bags again.