We don't use a dishwasher, but if we did we would use something nontoxic like this. 

About this item

• TRUE ECOLOGICAL ALTERNATIVE: Phosphate-free and sceptic tank safe, this product is crafted using plant- and mineral-based ingredients from natural sources
• ECOLOGO Certified: Our dishwasher tablets are certified by UL ECOLOGO for its reduced impact on the environment and biodegradable
• HYPOALLERGENIC: Free of harsh chemicals and from artificial fragrances, because we care about your sensitive skin
• PETA Certified: Proudly Vegan and Cruelty-free - Never tested on animals