Stiftung Warentest: Low‑Cost Dishwasher Tablets Beat Brand Names in Test
Stiftung Warentest evaluated 16 dishwasher cleaning products – 10 tablet formulas and six liquid caps – in its August 2026 issue. The assessment covered cleaning performance, rinsing, drying, scale protection, material safety, environmental impact and packaging. Cheap store brands emerged as the clear winners. The Aldi “Power Force All‑In‑One” tablet and Rossmann’s “Domol Ultra Power All‑In‑One” both earned an overall grade of 2.1, outperforming many premium brand offerings. Only two products met every test criterion.
The test also highlighted the first cap to receive a “good” rating – the Somat “Excellence Premium 5‑in‑1” – despite its higher price of about €0.20 per unit. In a related consumer‑goods comparison, a separate washing‑detergent test found discounter own‑brand powders, such as Everdrop, matching or surpassing well‑known brands like Ariel and Persil. Across both studies, low‑price retailer formulations proved to be effective and environmentally competitive.
Entities: Aldi · Domol Ultra Power All‑In‑One · Germany · Power Force All-in-One · Power Force All‑In‑One · Rossmann · Somat · Stiftung Warentest
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 9 SOURCES] Aldi’s “Power Force All‑in‑One” tablets received a rating of 2.1. (Stiftung Warentest)
- [● 9 SOURCES] Three products received a “Satisfactory” rating. (Stiftung Warentest)
- [● 9 SOURCES] Rossmann’s “Domol Ultra Power All‑in‑One” tablets also received a rating of 2.1. (Stiftung Warentest)
- [● 9 SOURCES] Stiftung Warentest tested 16 multicha dishwasher detergent products, including 10 tablets and 6 caps. (Stiftung Warentest)
- [● 9 SOURCES] Eight of the 16 products received a “Good” rating. (Stiftung Warentest)
- [● 9 SOURCES] Somat’s “Excellence Premium 5in1” cap received a “Good” rating and costs €0.20 per unit. (Stiftung Warentest)
- [● 9 SOURCES] Three products received a “Poor” rating. (Stiftung Warentest)
- [● 9 SOURCES] Two products received an “Adequate” rating. (Stiftung Warentest)
- [● 9 SOURCES] The Rossmann “Domol Ultra Power All‑in‑One” tablet also received a rating of 2.1 (Good). (Test result)
- [● 9 SOURCES] Two products were criticized for containing benzotriazole and surfactants that may harm waterways. (Test commentary)
- [● 9 SOURCES] Eight of the tested products received a “Good” rating. (Stiftung Warentest results)
- [● 9 SOURCES] The Somat “Excellence Premium 5‑in‑1” cap received a “Good” rating and costs 20 cents. (Test result)