The US entirely eliminated screwworms within its border in a very similar fashion 60 years ago and then wiped them off the whole continent just for good measure: https://www.youtube.com/watch?v=Olj8arvfYj4
If we actually directed effort at exterminating harmful mosquitos, they would be gone in a couple years.
You mean 40% of Democrats want to decrease it, while the swing voters she needs to win an election are the most likely to support sending current or greater levels of support.