Will Weed B Gon overspray hurt my edible plants? Is the produce of them safe to eat?

My fricken landlord just came by and doused every inch of lawn gr with weed b gon spray, and even though I asked him to avoid my edible plants, he was not very careful. Does anyone have any links or info on whether my raspberries and herbs are still safe to eat? The raspberries won't be ready to pick til early July, but the herbs are edible now...anyone know if they retain the toxins and for how long? Grrrr I hate this so much! Should I water the crap in to get it off the lawn so it's safe to walk on? He has put up no signs saying its been treated, either, and kids walk through this yard from school. :-(