Neff’s Lawn Care seems like a decent enough company.

But when they decided to thank a couple of hundred customers with a picnic in Germantown, Ohio, things went bad.

Health types in Dayton & Montgomery County say that food served at the picnic led to at least 36 individuals have become ill; of those, nine have been hospitalized. Of the ill, 5 have been confirmed to be infected by E. coli O157.