Why We Did This Test
Eco laundry detergent has improved dramatically in the last three years — formulations are better, dissolve more completely, and cleaning power has closed the gap with conventional brands. But the category is still littered with products that score high on marketing and low on actual performance. We wanted data, not claims.
We ran every detergent through the same six-load test protocol over six months. Same household (two adults, one child), same washing machine (standard agitator, medium water hardness), same load composition:
- Body oil load — cotton T-shirts worn one day
- Gym towel — synthetics with sweat and odor
- Mixed load — cotton/polyester everyday clothes
- White pillowcase — pillowcase only, with night sweat
- Kids' play clothes — grass stains, food stains
- Dark denim — worn lightly, dust and body oils
What Makes an Eco Detergent Actually Eco
Before the results, a quick framework. "Eco" on a label means nothing without specifying what makes it eco. We evaluated each product across four dimensions:
- Ingredients: Plant-based surfactants, no synthetic fragrances, no optical brighteners, no phosphates. Look for EWG Verified, MADE SAFE, or EPA Safer Choice labels as shorthand.
- Concentration: Highly concentrated formulas mean less plastic per load. A 2x or 3x concentrated detergent uses significantly less water to ship and produces less packaging waste.
- Packaging: Cards over bottles. Refill systems. No single-use plastic where avoidable.
- Wastewater profile: All surfactants biodegrade, but some faster and more completely than others. Look for OECD 301B certified biodegradability.
The Six Products
- Seventh Generation Liquid Laundry Detergent (Free & Clear) — 100oz bottle, ~87¢/load, EWG Verified, no fragrance, plant-based surfactants
- Persil ProClean Sensitive Skin — 100oz bottle, ~73¢/load, EPA Safer Choice, no dye, limited fragrance
- Dropps Laundry Detergent Pods — 32 pods, ~23¢/load, EWG Verified, B Corp certified, minimal packaging
- Tru Earth Eco-Strips — 32 strips, ~25¢/load, no plastic bottle, fragrance-free option, hypoallergenic
- Meliorita Enzyme Laundry Powder — 1.5kg bag, ~18¢/load, enzyme formula, minimal packaging, European brand
- Blueland Laundry Essentials Kit — Starter kit with reusable tin + 20 tablets, ~33¢/load once starter purchased, no single-use plastic
Results
Best Overall: Dropps Laundry Detergent Pods
Dropps won on every metric that matters. Cleaning performance was genuinely excellent — equal to or better than Persil on body oil loads and notably better on the gym towel (the hardest test item). The pods dissolve completely in cold water with zero residue. The packaging is a cardboard mailer with compostable inner packaging; zero plastic. At ~23¢/load it's competitive with conventional detergents and cheaper than most eco alternatives. One complaint: the packaging uses a zip-lock pouch that is not recyclable — but the outer box is. At this price point and performance level, Dropps is the clearest win we've tested in three years of eco product testing.
Best Liquid for Those Who Prefer Liquids: Seventh Generation Free & Clear
Not the cheapest, not the most concentrated, but the most reliable all-around liquid option. Seventh Generation handled every load without issue — no residue, no redeposition, clean rinse on all fabric types. The fragrance-free version is genuinely unscented (unlike some "free & clear" products that add masking fragrances). Seventh Generation's main limitation is the bottle — it's recyclable HDPE plastic, which is better than mixed-material packaging, but it's still a lot of plastic for a liquid product that's mostly water. If you can afford the shipping weight, Dropps beats it. If you need a liquid and want something you can pick up at Target tomorrow, this is it.
Best Budget: Meliorita Enzyme Laundry Powder
At ~18¢/load, Meliorita was the cheapest product in our test — and one of the best performers. The enzyme formula (proteases and amylases that break down protein and starch stains) made it the standout on the kids' play clothes with grass and food stains. It dissolved fully in warm and hot water; in cold water it left a faint visible residue on dark clothes (less of an issue in warm cycles). The tradeoff: it's a powder that comes in a paper bag shipped from Europe, so there's a carbon footprint consideration on the shipping side. But for cleaning performance per dollar, nothing else we tested came close. Note: not widely available in US stores; order online directly from Meliorita or through their European retailers.
Best for Zero-Plastic Laundry Room: Blueland
Blueland's model is different: you buy the starter kit ($44, includes a reusable tin) once, then buy refill tablets in compostable packaging for ~$15/20 tablets. After the starter kit, cost per load drops to ~33¢ — and there is zero ongoing plastic waste. Cleaning performance was mid-tier: fine for everyday loads, but noticeably less effective on the heavy gym towel and the grass-stained play clothes. Blueland is a solid choice if your priority is eliminating plastic from your laundry routine and your loads are generally light to moderately soiled. If you have kids or workout clothes, you'll want to pair it with a stain treatment.
Best Fragrance: Persil ProClean Sensitive Skin
Persil wins on scent — specifically their limited fragrance version, which uses a small amount of perfume to mask base odors without the synthetic fragrance cocktail found in regular detergents. If you want a clean-laundry scent without the chemical load, Persil's Sensitive Skin formula is the most tolerable conventional-detergent-adjacent option we tested. Cleaning performance is at the top of the category, matching Dropps on body oil and exceeding it on grass stains. The main strike: it's still a liquid detergent in a plastic bottle — not meaningfully better than conventional brands on the environmental side, despite the EPA Safer Choice label. Use it if performance and mild scent are your priorities and you're buying it to transition away from fully synthetic fragrances, not as a zero-waste solution.
Skip: Tru Earth Eco-Strips
Tru Earth has good intentions and a smart packaging model. The strips are lightweight, ship without water weight, and the packaging is minimal. Unfortunately, our test results didn't support the model. Cleaning performance was notably below the other products on body oil and gym towel loads — the same loads that expose detergent limitations most clearly. The strips dissolved adequately in warm and hot water but left a faint residue on synthetic fabrics in cold water. At ~25¢/load it's more expensive than Dropps and Meliorita while delivering meaningfully less cleaning power. If you've already switched to Tru Earth and it's working for your household, it may be fine for light loads. But for the same price as Dropps with significantly better performance, Tru Earth is hard to justify.
Cost Per Load Comparison
- Meliorita Enzyme Laundry Powder — ~$0.18/load
- Dropps Laundry Detergent Pods — ~$0.23/load
- Tru Earth Eco-Strips — ~$0.25/load
- Blueland Tablets (ongoing) — ~$0.33/load
- Seventh Generation Free & Clear — ~$0.87/load
- Persil ProClean Sensitive Skin — ~$0.73/load
Note: cost per load calculated from standard retail pricing at time of purchase (US market). Prices vary by retailer and bulk purchase. Persil and Seventh Generation are available at most major retailers; Dropps, Tru Earth, Blueland, and Meliorita require online ordering.
What About Laundry Sheets?
Laundry sheets (the category that includes Tru Earth) have exploded in popularity for their convenience and zero-plastic packaging. After testing Tru Earth specifically, our conclusion: the convenience is real, but the cleaning performance gap versus pods and powders is still significant. If you're using sheets for light everyday loads and have no kids, sweaty gym clothes, or heavy soil loads, they may work fine. For any household with real laundry demands, they're not there yet. We expect the formula quality to improve — follow-up tests planned for late 2026.
The Bottom Line
Dropps is the clear winner at the intersection of performance, price, and packaging. Meliorita is the budget play if you don't mind powder and can order online. Seventh Generation is the liquid you reach for when Dropps is out of stock. Persil is fine if you want some fragrance and are transitioning from conventional detergents. Blueland is the right choice for zero-plastic-first households. Skip Tru Earth at current prices — the performance gap is too wide for the cost savings to matter.
The broader takeaway: eco laundry detergent has genuinely closed the performance gap with conventional brands. The only area where conventional detergents still hold a meaningful advantage is heavy-duty stain removal on grass and protein stains — and enzyme-formulated eco options like Meliorita and Dropps narrow even that gap. There's no longer a compelling performance reason to stick with conventional brands.