@dbattistella https://archive.org/details/biostor-76681
I think this is the study, for reference.
Thanks for the news, and the article.
I too searched and found the same link, but what stood out , amongst other things is that this study is published in 1996. 3 decades ago. While this method has not changed there are likely newer methods, to kill insects, being used.
Wonder if anything has changed ( presence of insects, population of insects, other (ans alternative) methods and their effectiveness.