SCIENCE said:
Apparently the fruit fly olfactory circuit evolved a variant of a Bloom filter to assess the novelty of odors.
It is also attracted to a certain shade of yellow. Which happens to be the same yellow on the sulo recycle bin lids. I cut up a small amount of some fruit and spray the whole thing with the Creepy Crawly insect surface spray that’s supposed to last six or twelve months. Can buy it at the stupormart.
Even thogh the wind blows and all, invariably when I look later, there is usually at least one dead qld fruit flycarcass to observe on the bin lid. I spray both bin lids but the yellow one always gets them.