The bugs are gone, or will be gone soon. What fly patterns are indifferent to the existent of bugs themselves? I've never caught anything on a mop fly, so I'm not liking my chances...
Flying insect numbers have plunged by 60% since 2004, GB survey finds
Scientists behind survey of car number plates said drop was ‘terrifying’, as life on Earth depends on insects
www.theguardian.com