You both are diluting heavily ...
Personally, being one of the first to try, adopt and progress/recommend the practice, I typically utilize a 10ml per cup (237ml or .24l) mixture solution ... So, therefore, the typical ratio per gallon is roughly ~42ml Bayer Advanced Insecticide ... Knowledgeably diluting further for the known species sensitive to particular dips.
As to why the chemical ingredients are working for this/our particular implementation, for those who are unaware and just blindly use it because it knowingly works, I've written multiple posts regarding the specifics.