Extractor defoamer

I was wondering what every one is using as a defoamer for there extractors. i have a mytee and i ran out of the defoamer that came with it from detail king, it worked well just wondering what else is out there, and where too get it, appericate the help

 

In a pinch you can get some where they rent rugdoctors.

 

Don't go buying expensive chemicals for that! Get yourself some vinegar and add about a cup to your extraction tank and Bob's your uncle!