The National Institutes of Health report that most rinse-aid is completely biodegradable, and while it is neither carcinogenic nor dangerous if used properly, it can cause eye and skin irritation following prolonged exposure and should not be ingested, of course.

What is the safest rinse aid?

The EWG has identified three rinse aids that it believes are safe based on the data that is currently available: Ecover Rinse Aid, Seventh Generation Free and Clear Rinse Aid, and Nature Clean Rinse Aid. Some people advocate using vinegar or hydrogen peroxide in place of rinse aid.

What happens if you use too much rinse aid?

Spilled rinse aid can cause foam and lead to overflowing. Wipe up any spilled rinse aid with a damp cloth. To avoid rinse aid leaks, make sure the cap is securely attached.