Hydrogen peroxide is cheap and has multiple uses. Combined with baking soda and Dawn dishwashing liquid, it makes a great stain fighter for sweat stains on T-shirts. Simply apply 1/2 teaspoon of Dawn on each underarm section of the shirt, 2 tablespoons of hydrogen peroxide on each side, sprinkle on some baking soda and scrub with a nylon scrub brush. Then launder as usual.

The first reader tip shares more ideas for hydrogen peroxide:

Hydrogen peroxide: It's not just for streaking your hair anymore! I'm allergic to a lot of cleaning products (ammonia and Pine-Sol give me an instant sinus infection) and I would get sinus and breathing problems when I cleaned house. It was always a major undertaking to find products that didn't bother me much. Hydrogen peroxide has no odor, and it disinfects. I started using it for quick bathroom cleanups. Then I discovered that it works great for cleaning glass and mirrors. Next, I tried it on spots on my carpet, and it worked great (color-test first, but I've never had a problem with it taking color out).

I have spray bottles of it all over the house now. Just spray some on a stain on the carpet and let it sit for a minute or two, then wipe with a cloth. I spray my countertop in the kitchen each day, and it not only disinfects, it also puts a shine on if you dry it well.

If you get stains on your teeth from drinking coffee, you can brush your teeth with hydrogen peroxide. After a couple of times, it gets rid of the stains. Some people mix it with baking soda to brush teeth. -- Celine, Missouri

Competitor's coupons: Craft stores such as Joann and Michaels accept competitor's coupons. Somebody always has a 40- or 50-percent-off coupon for the week, so you should never get stuck buying at full price. -- C.H., Missouri

Use your phone: I downloaded the apps for the supermarkets I like to shop at on my Android phone. I go through their specials each week and click on the ones to add to my shopping list. One other thing I do is take a photo of my pantry and fridge before I go shopping. I do this if I haven't had the time to write a shopping list. Then I just look at the photos to see what I have or don't have. -- Brilly, forums

Air freshener: Take a used dryer sheet and put some essential oil/candle fragrance, etc. on it. Place it on your air/heating conditioner filter. The house smells nice for much cheaper than canned air fresheners. When it fades, add more oil, or replace it with a new sheet if it has helped filter dust and dirt. -- Krickit, email

Dish squeegee: I got a Dish Squeegee scraper tool as a gift. I thought it was something that I'd never use, but I love using it to scrape my dishes before washing them. While a rubber spatula can work almost as well, I like that the squeegee doesn't have a handle and you don't need to pre-rinse dishes. I use it to scrape crumbs from my counter and table, too. -- Janice, Ohio

(Sara Noel is the owner of Frugal Village (www.frugalvillage.com), a website that offers practical, money-saving strategies for everyday living. To send tips, comments or questions, write to Sara Noel, c/o Universal Uclick, 1130 Walnut Street, Kansas City, MO, 64106, or email sara@frugalvillage.com.)

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