I found that if you accidently put too much soap in the washer (dish liquid or whatever) and you are afraid it won't rinse out well, or are in danger of overflowing soap from the washer, ad some liquid fabric softner, it'll kill the suds.

I was at a laundramat for the first time ever when I first got married and I put in too much soap in a front loader machine....a kindly lady sitting there watching, picked up her bottle of liquid softner and added a capful and the suds went right down, I have never forgotten that!

Baking soda works well for freshening clothes if they aren't too bad, maybe a squirt of your shampoo....any port in a storm!