Almost all of us have dealt with smelly, musty odors in our homes and items that just won’t go away. Finding a solution becomes even more imperative in warmer months, if you’re constantly sweating through your clothes and shoes. We’ve covered everything from soaps that tackle “old people smell” to odor-busting household cleaners, but for contained spaces like closets, gym bags, hampers, suitcases and even cars, there’s one item you might not have considered: A set of odor-eliminating balls that one reviewer calls “little spheres of freshness,” like “tiny superheroes fighting off even the most formidable stinks in our home.”Arm & Hammer’s OdorBusterz balls come in packs from three up to 10, and are designed for small-space odor control. Each ball is about the size of a golf ball, and can be tossed in a smelly gym bag, closet, drawer, hamper, locker, backpack, suitcase and anywhere else musty odors build up.The balls are designed with a baking soda core to absorb and neutralize odors, while the plastic outer shell keeps it contained and mess-free while allowing for airflow. They’re advertised as working for up to 60 days, meaning you will eventually need to replace them, but some reviewers say they’ve gone for up to 90, while others report success with shaking them to activate, in order to make them last longer.Reviewers are amazed at how well the balls work to get rid of stubborn smells around the house and on the go. “These smell so fresh and clean! Generally, I don’t like the smell of closets because of that ‘old shoe’ smell. But for the past couple years I’ve been tossing these Arm & Hammer Odor Buster Balls in my tennis shoes and boots. And it actually smells pleasant in there nowadays,” one said.WalmartDon't want your hamper to smell before you have a chance to do laundry? Toss one of these balls in.Another called them “little round bodyguards for your nostrils,” and said that the “miracle balls” eliminated odors from their own shoes and their teenage son’s hamper.Shoppers have also gotten creative with where they put the balls to work. One parent described how the odor elimination made a “noticeable difference” when they placed two at the bottom of their toddler’s diaper pail. Another person found that the balls kept their suitcase fresh during a weeklong trip, after they put them in their bag of dirty clothing. Many others like to toss these in the trunk of their car, particularly if they have smelly, sweaty sports gear often going in there as well.In other words, there’s likely very few people out there who wouldn’t benefit from having these in one of their spaces. Drop it in your gym bag or sneakers, your hamper or closet, your trunk or suitcase and so much more. These “small but mighty” helpers can make a big difference, and only cost $6 for three.Promising reviews: “I borrowed my husband’s car which has a cover on it. It had rained the night before and I didn’t think twice about tossing the damp cover into the trunk. Big mistake. Two days later the car smelled absolutely horrendous — like straight mildew — and even with the windows open, the smell just wouldn’t go away. I threw one of these little balls in the trunk and within an hour the odor was gone. Now it smells fresh and clean, almost like laundry. I couldn’t believe it. I used the other two next to my cat’s litter box and in my shoe closet — both problem areas — and the smells are gone there too. Small but mighty. Highly recommend!” — Anabel “This worked so quickly and effectively! I had another air freshener, but did not work even when using it for some time. This one though, immediately when placing it and coming back to it an hour later it was working! I have a dog closet, and it smells, but this took all the nasty smells within an hour! The air is fresher and cleaner! I use one in my shoe closet and the other one in the cleaning/dog closet and there is no more odor. It looks like a small little thing but it works so well! Add two to a closet that has strong smells and one in a “normal” closet and you will be so happy with it!” — Carlo K “I have my shoes inside my closet and found that they were starting to smell a bit. I didn’t want them to also smell up my clothes so I bought these. I put them in several different spots where the shoes are, in a day these have already worked wonders. My closet no longer has a shoe smell and the fact that I was able to fix it so easy was great. If I was really pressed for a negative it would be that these only last up to 60 days. But I will be repurchasing after 60 days.” — Patty M “I have ADHD. Keeping up with my laundry is a nightmare. If I don’t wash my laundry right away, it starts smelling… then my room smells. Bleh!! Which this made me stress and hate myself… anyways, I put one of these in the bottom of my hamper… I came home from work today - no smell. It actually smells wonderful.I can breathe again…” — Arial “These are great for my stinky steel toe work shoes. They have a distinctive baking soda plus scent smell but not overpowering to your sinuses. I put one in each of my work shoes when they’re in my locker and then I roll them into my street shoes while I wear my work shoes! I change them out appropriately every 45 days or so due to lockers around mine also being stinky and it keeps my shoes smelling good and also helps control invading smells some too!” — Dee Check out these other odor-eliminating solutions, from a list curated by the HuffPost Shopping team:AmazonA pack of six charcoal odor absorbing bagsThese activated charcoal bundles act as air purifiers and odor absorbers and can last up to two years. They're made with low-grade charcoal chunks that are porous and effective. The bags are small and easy to tuck into places that harbor smells, like closets, pantries, shoes, cars, gym bags, trash cans and more. You can rejuvenate them by putting them out in the sun for a couple of hours monthly, ensuring they last long and are worth the investment. it's an easy, non-toxic way to keep the air in your home fresh, even if it's full of stinky animals and kids. Promising review: "This product is terrific! I put two packs in our bathroom and the mystery odor was gone within two days. Same with dog crates—I’d give it more stars if I could!" — KatydidAmazonA hypochlorous acid cleaning sprayHypochlorous acid is really great at sanitizing and eliminating odors. It uses the power of oxidation to obliterate odor-causing bacteria and fungi, leaving behind a fresh, clean and disinfected surface. The Briotech sanitizing spray is a great, reviewer-approved option for anyone who wants to add a bit more power to their cleaning routine without adding harsh chemicals. It's gentle enough to use every day on high-touch items that could get grimy and smelly over time, like phones, toys, high chairs, glass tables, and more. Promising review: "Best Sanitizer/Disinfectant I've ever used. It literally takes food and pet odors out of the air. I use it on my bedding, furniture, shower, sinks, faucets and any surface that needs to be sanitized. It kills bacteria, viruses and helps control mold with No Toxic Chemicals. Free of Alcohol, bleach, chlorine, ammonia, parabens, sulfate. No additives, fragrance or dyes and no harsh fumes. Safe to spray around kids, pets and food prep areas. Leaves your homes smelling clean and new." — Ashley Mack AmazonA set of cheerful fruit-shaped shoe deodorizers These Boot Bananas are made to be effective and long-lasting, making them a great value. The fun shape is as delightful as it is functional, easily slipping into shoes and working overtime to remove stink and sweat. They are made with activated charcoal, which is known for its ability to neutralize even extreme odors (you'll often see it used in air filters). If you have athletic teens in your home, own hardworking work boots, love to hike or camp, these Boot Bananas are for you.Promising review: "Finally, death to the shoe stench. I have a husband with stinky work boots and two pre-teen boys. The shoe odor can be like a wet slap in the face when you come home. I’ve tried many, many things to stop it. Powders are a pain in the buns and leave a mess. Sprays just don’t work. THESE babies work!!! You just put them in the shoes and it kills the stench. Sure, they aren’t cheap, but since they work, it’s absolutely worth every penny." — Brenda B.