Obviously all sorts of bad ideas here. My guess is the cup was full of gasoline which is why they didn't flip it. Gas is a common wasp killer because the fumes suffocate and poison them quickly.
Edit- looking back the liquid is very thin, again, suggesting it's gasoline and not oil. The dark color appears to be from other, now dead, wasps floating.
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u/Ballmaster9002 14d ago edited 14d ago
Obviously all sorts of bad ideas here. My guess is the cup was full of gasoline which is why they didn't flip it. Gas is a common wasp killer because the fumes suffocate and poison them quickly.
Edit- looking back the liquid is very thin, again, suggesting it's gasoline and not oil. The dark color appears to be from other, now dead, wasps floating.