maeve, that was very interesting to see the yellow jackets of Florida.They look rather similar to our wasps, but more slender and elegant. Also, I think ours have more yellow in their stripes. It sounds as if the yellow jackets more aggressive. And I appreciate that for someone with a severe allergy, anaphylactic shock from a sting is a real risk. Only, I've watched our wasps scritching and scratching a wooden garden seat to get wood pulp for their nest, so patient and clever. I just don't like killing things, unless they are doing me harm.