I work in a small garden center. This happened several years ago, but I was recently reminded of it.
Customer: "What's the best soil for my vegetable garden? I want to use something all organic."
Me: "Our Super Harvest mix is an excellent soil for veggies. It's all organic and has compost, kelp meal, worm castings..."
Customer: "Worms? Like... real worms?"
Me: "Earthworms, actually, their castings... worm 'leavings' you could call it...it's really good for the soil"
Customer: "So the worms would be in my vegetables?!"
Me: "No, it's just their castings, they're good for the the soil"
Customer: "So when we eat the vegetables will there be worms?"
Me: "No... no worms, just their castings in the soil"
Customer: Yes, but won't the worms be in our vegetables when we eat them??"
Me: "No... no worms... "
Customer: "Are you sure????"
Customer: "But won't their 'leavings' make us sick?"
Me: "No, it will help your vegetables grow and become part of the soil...."
Customer: "Ohhhhh kayyyyyyy.... well I think I'll just go buy "Fantastic Grow" soil at "Big Box Store" instead"
(It's a good thing I never got as far as telling her about the chicken manure and bat guano)