Non-foaming dishwasher detergent?

The soil test page references adding in non-foaming dishwasher detergent. Googling turns up very little on this. What have people been using?

I used this…


I basically assumed dishwasher detergent was non-foaming. contrast this to dish soap (Dawn) which foams right up.

The purpose is to act as a surfacant to allow better layering of the types.

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Great question…you can certainly go with the brand that @Modawg2k has suggested. And, to piggyback on @Dub9 the larger majority of dishwasher detergent is non-foaming.

The below article helps clarify dishwasher detergent a little more.

Best of luck with your soil test!