I wash all bought fruit and veg in running water before we use them, including oranges. The only exception is mushrooms, which washing can spoil. Just brush off any residual growing medium with the thumb. I never eat them raw because I don't like them raw. I don't bother washing lettuces, rocket, tomatoes and beans that I've grown myself as I don't use pesticides and life's too short to worry about whether some minibeast or other might have peed/pooed on them. In fact, I have a penchant for munching them fresh-picked as I do the gardening. I'll pick a bunch of rocket and give it a gentle bash with my other hand to dislodge those pesky flea beetles that make tiny shot holes in the leaves, and scrutinise the innards of lettuces for slug babies, and that's it.