When it comes to keeping dishes clean, it’s easy to assume that all dishwasher detergent are created equal. But the reality is that many popular brands leave behind more than a sparkling finish—they can leave toxic residue on your dishes and harmful chemicals in your home
If you shop at Costco, the detergent aisle can be overwhelming with options. To help you make a non-toxic choice, I’ve broken down some of the most common dishwasher detergents you’ll find there. Let’s dive into what to avoid, what’s better (but not perfect), and what I believe is the best choice for your health and home.
The Importance of Choosing the Right Dishwasher Detergent
Dishwasher detergents don’t just rinse away into oblivion. Residue can cling to your dishes and utensils, exposing you to harmful chemicals with every meal. Many mainstream detergents contain harsh cleaning agents, synthetic fragrances, colorants, and petroleum-based chemicals.[1]
These ingredients aren’t just tough on grease—they can also be tough on your health. Toxic chemicals from detergents can irritate the skin, disrupt hormones, and even impact respiratory health over time. That’s why choosing a non-toxic option that works effectively without compromising your well-being is essential.[2]
Toxic Alert: Brands to Avoid
The Worst Offender: Cascade
Cascade is one of the most recognizable names in dishwasher detergents, but its ingredient list needs cleaner. While the brand claims to give your dishes a “spot-free shine,” here’s what’s lurking in the formula:
- Benzotriazole: A petroleum-based chemical that is both toxic and environmentally damaging.[3]
- Fragrance: Synthetic fragrances are often a cocktail of undisclosed chemicals, many of which can disrupt hormones or trigger allergies.[4]
- Colorants: These are purely cosmetic and serve no purpose other than to make the product look appealing in its packaging.[5]
Even if Cascade has the cleaning power to get the job done, the long-term risks to your health and the environment aren’t worth it.
The Middle Ground: A Slightly Better Option
Kirkland’s Ultra Shine Dishwasher Detergent
Kirkland’s Ultra Shine is Costco’s in-house brand, and while it’s a step up from Cascade, it’s still not an ideal choice if you’re aiming for a truly non-toxic home.
Here’s what you need to know:
- What’s Better: Kirkland’s formula includes some sodium-based cleaning agents, which are less harmful than the petroleum-derived ingredients found in Cascade. Plus, it doesn’t have the plastic coating that some detergent pods use.
- What’s Not So Great: If the label lists “fragrance,” that’s a red flag. Even if it’s marketed as “lightly scented,” synthetic fragrances can contain phthalates and other hormone-disrupting chemicals.
While Kirkland’s Ultra Shine is a better option in a pinch, it’s not the cleanest choice available.
A Non-Toxic Dishwasher Detergent Option at Costco
Blueland Dishwasher Tablets
If you’re looking for a truly non-toxic dishwasher detergent at Costco, Blueland is the clear winner. This brand stands out for its clean ingredients and eco-friendly design. Here’s what makes it the best option:
- Fragrance-Free: No synthetic fragrances mean no hidden chemicals on your dishes.
- No Plastic Coating: Blueland uses an all-powder formula that eliminates unnecessary plastic waste, unlike many detergent pods.
- Safe and Effective Cleaners: Blueland relies on sodium-based cleaning agents and enzymes to break down grease and food residue without toxic additives.
Not only does Blueland prioritize your health, but it’s also one of the more affordable options. Surprisingly, the price per tablet is lower than Cascade, making it a win for your wallet and home.
Why Choose Non-Toxic Dishwasher Detergent?
Switching to a non-toxic dishwasher detergent is one of the simplest ways to reduce exposure to harmful chemicals. Here’s what you gain by making the switch:
- Cleaner, Safer Dishes: No more worrying about chemical residue on the plates you eat from every day.
- Healthier Indoor Air: Fragrance-free formulas eliminate the synthetic chemicals that can linger in your home’s air.
- Eco-Friendly Benefits: Many non-toxic brands also take steps to reduce environmental impact, such as using biodegradable formulas or plastic-free packaging.
Final Thoughts
Shopping for dishwasher detergent might not feel like a big decision, but your choices can have a lasting impact on your health and the environment. At Costco, you’ll find plenty of options, but not all are created equal.
To recap:
- Avoid toxic options like Cascade, which are loaded with harmful chemicals.
- Kirkland’s Ultra Shine is a step in the right direction but still falls short of being non-toxic.
- Blueland Dishwasher Tablets are the top choice for a clean, non-toxic detergent that’s safe, effective, and budget-friendly.
Switching to non-toxic dishwasher detergents is a small change that can make a big difference. After all, your home should be a haven free from the toxins that often hide in everyday products.
Take a closer look at what’s in your cleaning products—your health is worth it.
Written for Non-Toxic Dad
Helping you make healthier, smarter choices for your home.
References:
- Ogulur, Ismail, et al. “Gut Epithelial Barrier Damage Caused by Dishwasher Detergents and Rinse Aids.” The Journal of Allergy and Clinical Immunology, vol. 151, no. 2, Feb. 2023, pp. 469–84.
- Dodson, Robin E., et al. “Endocrine Disruptors and Asthma-Associated Chemicals in Consumer Products.” Environmental Health Perspectives, vol. 120, no. 7, July 2012, pp. 935–43.
- Pillard, D. A., et al. “Toxicity of Benzotriazole and Benzotriazole Derivatives to Three Aquatic Species.” Water Research, vol. 35, no. 2, Feb. 2001, pp. 557–60.
- Rádis-Baptista, Gandhi. “Do Synthetic Fragrances in Personal Care and Household Products Impact Indoor Air Quality and Pose Health Risks?” Journal of Xenobiotics, vol. 13, no. 1, Mar. 2023, pp. 121–31.
- Asif Ahmed, Mohammed, et al. “Dietary Intake of Artificial Food Color Additives Containing Food Products by School-Going Children.” Saudi Journal of Biological Sciences, vol. 28, no. 1, Jan. 2021, pp. 27–34.
