S.J.
Add a little vinegar and lemon juice to water and use that solution to clean produce with skin. They also sell veggie brushes to scrub the produce.
A little trick I learned - smell the produce - if you cannot smell very distinctly what the item is (ie if it doesn't smell like an apple) it means there are too many chemicals on that particular fruit. Yep, I am that weird lady smelling all of the produce in Shnucks.