Yes, If treated and they try to feed on the plant, Once consumed they die off, I also dust treat with sevin dust as well and find dead cuke beetles lying on the leafs of the plant as it seems like i have the most problems with the cucurbits family.
Will have to step up the neem oil treatments over the next week or so to hold of the chances of white powdery mildew and black mold in this upcoming tropical environment.