Is it safe to eat at a picnic?

Considering the prevalence of fleas and their causal relationship with the tapeworm parasite, is it safe to have a picnic at a park near where squirrels are known to frequent who are often riddled with these vermin at times when the seasonal weather is most opportune for picnicking?

Fleas could jump in your potato salad. They’d presumably look like pepper, a common enough ingredient in potato salad, and you may easily catch the infection.