Unless I tell you differently when you visit the farm, you should assume that all crops have been sprayed. All chemical applications are made by me personally, and careful records kept to insure that we meet with government regulations. While each pesticide that we use has gone through extensive toxicology testing and secured government approval for its use, there is always a potential risk involved (just like there would be for unanticipated side effects from any prescription or over-the-counter drug ).
It would be nice and save me lots of money if I could avoid all use of chemicals and grow things organically. If we lived in a semi-desert climate (like eastern Washington State) where it never rained and few insects around, this might be possible. Unfortunately, Missouri summers are usually hot, humid and rainy -- in other words an ideal climate for insects, weeds, fungus and other assorted pests. If you are interested in just one consequence of NOT spraying strawberries click here.
As a general rule, we very seldom spray fruit that is ripe or even close to being ripe. My experience has been that weed, fungus, and insect problems are more easily cured at an early stage -- the old adage about an "ounce of prevention" is certainly true when applied to controlling pests! In addition, it would be almost impossible to keep people from "sampling" as they pick even if I were to post "ABSOLUTELY NO EATING" signs throughout our patch and try to enforce it so our ability to spray ripened fruit is pretty limited. I personally recommend eating berries right out of the patch but if you are uncomfortable with that approach I would suggest washing them before you eat or freeze them. DO NOT wash berries and THEN try to refrigerate them as the refrigerator life of washed berries is very short.