What is wrong with people. Read the instructions on the package and even if it says WASHED AND READY TO EAT - STILL WASH IT. Go to a market garden and if allowed walk through and I guarantee you will see more than one little cricket flying,buzzing or crawling among the beautifully fresh leafy...
You take these products home packed together, store them in your fridge together (milk is then opened) so what the hell are you so worried about. Stop being so precious.