The study is specified below. In brief the scientist have isolated drone specific chemicals that attract Varroa. Most know that Varroa prefer drone brood, but the factors of the specific attraction towards drone brood have not been identified until now. The hope is as beeks we can use these attraction factors to lure Varroa into traps. The studies must be confirmed, there is more work to be conducted. There is hope for the future a of Varroa decline by natural drone scents.
The below TITLED article below is very difficult to read, you have been warned. Even the title is difficult. I skimmed through it.
Influence of physicochemical factors on environmental availability and distribution of semiochemicals that affect Varroa destructor and phylogenetically close organisms: classification by VHWOC PCA-clustering.