So cute! They don’t call flies ‘sky raisins’ for nothing. 
I still get a little grossed out when my cats eat a bug.
A little late to this thread, but I wonder if maybe having certain plants might also help. I’ve heard both thyme and rosemary are good because they will detract some pests from visiting (I heard that wasps dislike thyme in particular). Rosemary may or may not be practical depending on the size of your patio, but thyme plants can remain fairly compact, and then you have the plus of getting fresh herbs.
Not scientific at all, we used to get some wasps in our yards. We even had a few small nests a few times, which we smoked and got rid of right away. I’ve been growing rosemary and thyme for the last few years, and I haven’t really seen wasps anymore (at least no more nests). This could definitely be coincidence, so I can’t be sure this will do it. There are a few good websites that will tell you what plants might detract which pests.
