A Costco run can feel like a productivity win: bulk sizes, decent prices, and one-stop access to everything from pantry staples to cleaning supplies. However, convenience can come at a cost, especially regarding the everyday products we bring into our homes without thinking twice. The truth is, not everything lining those warehouse shelves is as harmless as it looks. Some of the most common, best-selling items are also some of the most toxic.
Here are three everyday products I won’t bring into my home, no matter how well they’re marketed or how affordable they seem.
Listerine and Other Conventional Mouthwashes
Let’s start with something nearly every bathroom cabinet has: mouthwash. Listerine is one of the most popular brands, promoted for its ability to “kill 99.9% of germs.” That sounds impressive—until you understand that not all germs are harmful. Many are essential to your health.
Your mouth is home to a diverse ecosystem of bacteria known as the oral microbiome. Like the gut, this microbiome plays a key role in digestion, immunity, and cardiovascular health. One of its lesser-known jobs is supporting the body’s production of nitric oxide—a molecule critical for healthy blood pressure, circulation, and overall heart function. Some beneficial bacteria in your mouth help convert dietary nitrates into nitric oxide. You don’t just wipe out the harmful bacteria when you use a harsh antimicrobial mouthwash like Listerine. You disrupt the entire microbial balance, including the good guys.
There’s also the issue of ingredients. Commercial mouthwashes contain synthetic dyes, artificial flavorings, alcohol, and preservatives. If accidentally ingested in large amounts—especially by children—these ingredients can cause nausea, vomiting, and worse. Some bottles even carry poison control warnings for a reason. There are far safer ways to support oral health, like using natural mouthwashes with xylitol or essential oils, oil pulling with coconut oil, or simply brushing and flossing with non-toxic products.
Clorox and Other Chlorine-Based Disinfectants
Bleach is a staple in many households. It’s used for cleaning, whitening, and sanitizing just about everything. And there’s no doubt it works—it’s powerful. But that power comes with a dark side.
Clorox bleach contains sodium hypochlorite, a potent chemical that reacts easily with other substances. Mix bleach with vinegar or ammonia—common natural or DIY cleaners ingredients—and create toxic gases like chlorine or chloramine vapor. These aren’t just unpleasant to breathe in. They’re hazardous. Chlorine gas was used as a chemical weapon during World War I. Breathing it in, even in lower doses, can cause respiratory distress, coughing, chest pain, and damage to lung tissue.
Bleach also reacts with organic matter—like dirt, food residue, or other common materials found on surfaces—to form chloroform and other chlorinated volatile organic compounds (VOCs). These are classified as possible carcinogens and are known to cause dizziness, fatigue, and central nervous system depression with repeated exposure.
If you have kids, pets, or anyone with respiratory sensitivities in the home, using bleach regularly can increase their toxic burden and affect indoor air quality. Safer alternatives include vinegar (used independently), castile soap, baking soda, or plant-based disinfectants that don’t produce harmful byproducts.
Scented Garbage Bags
This one might seem minor, but it’s a big one for indoor air quality. Scented trash bags are often marketed to “neutralize odors” in your kitchen or bathroom. They’re pumping synthetic fragrance compounds into your home 24/7—compounds that don’t just smell bad to those with chemical sensitivities but are bad, in ways that aren’t always obvious.
Fragrances in consumer products are considered trade secrets, which means manufacturers don’t have to disclose the complete list of ingredients. These scents include phthalates (used to make the scent last longer), synthetic musks, and other compounds linked to hormone disruption, thyroid interference, neuroinflammation, asthma, and cancer. These compounds are classified as VOCs, meaning they off-gas into your indoor air, constantly, quietly, and without any indication beyond a vague floral or citrusy smell.
The worst part? You don’t need to use the product for the chemicals to be active. A scented garbage bag in your cabinet or trash can is enough for the fragrance chemicals to enter your air. This is especially concerning for small children, pregnant women, and anyone with chemical sensitivity, but really, it affects everyone. Fragrance exposure is cumulative and often unavoidable outside the home, so it makes sense to limit it where you can control it.
Safer options are easy to find: go for unscented, BPA-free trash bags, or better yet, use compostable options made from plant starches. They don’t add anything extra to your air and are often gentler on the environment.
The Takeaway
Just because a product is standard doesn’t mean it’s safe. And just because it’s on the shelves at Costco, Target, or your local grocery store doesn’t mean it belongs in your home. Listerine, Clorox, and scented garbage bags are just a few examples of products that carry hidden risks—from disrupting your body’s microbiome to compromising your air quality and exposing you to toxic byproducts.
Simple awareness goes a long way when it comes to your health and your family’s health. And the best part is, these aren’t sacrifices. They’re upgrades—because peace of mind is worth more than any bulk deal ever could be.
References:
- Guillen, V. M., Irizarry, L., & Connolly, M. K. (2024, May 9). Chloroform toxicity. In StatPearls [Internet]. Treasure Island, FL: StatPearls Publishing. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK604204/
- Pastor-Nieto, M.A., & Gatica-Ortega, M.E. (2021). Ubiquity, Hazardous Effects, and Risk Assessment of Fragrances in Consumer Products. Current Treatment Options in Allergy, 8(1), 21–41. https://doi.org/10.1007/s40521-020-00275-7
- Laumen, J. G. E., Van Dijck, C., Manoharan-Basil, S. S., de Block, T., Abdellati, S., Xavier, B. B., Malhotra-Kumar, S., & Kenyon, C. (2024). The effect of daily usage of Listerine Cool Mint mouthwash on the oropharyngeal microbiome: A substudy of the PReGo trial. Journal of Medical Microbiology, 73(6). https://doi.org/10.1099/jmm.0.001830
