So what does this mean for all of us who buy coffee at coffee shops every morning? Will this cause serious problems long term since we are consuming residues of their dishwasher chemicals? One potential solution is to always get your coffee to go, but that probably only partly solves the problem.
There are a lot of things than can go wrong when you order from a restaurant or coffee shop. There could be diseases, bacteria, virus, chemicals or even contaminent such as glass parts or insects. The answer to this question would be to only order from places you trust - and even then, contamination can happen quickly and in invisible ways.
I've worked in several, and if you mean "infallible" OK, but I can assure you the people I worked with gave a damn, cared, and would never intentionally slack off, or do a poor job, placing people at risk.
Certain pieces of equipment are cleaned at the end of the night, so even if you bring your own mug you don't remove the possibility of leftover soap or sanitation solution residue.
