I remember my old man had a motorized fogger for mosquitoes up at our cabin - up until the mid-seventies. Not sure if it was DDT or not. I’m guessing there must be something that can be used. There are cans of “Off” that are foggers - so perhaps there is something for ticks.
Here in the city I’m living in in India, the fancy resort hotel down the road has a team of gardeners that canvass their property every evening with backpack foggers to knock down the mosquito population.
From what I’m reading online, it’s either Permethrin or a related product, and most of the write-ups are all framed from the perspective of “ooh, I really don’t want to use chemicals so I can be organic” and how these products aren’t *that* bad.
Thing is, I *WANT* bad. I don’t really care about being “organic” or “low-impact”. I want something really horrific that I can have the pest company fog into my treeline 3 or 4 times over a period of a month or so, and I won’t have to worry about my kid contracting Lyme disease if she plays hide-and-seek in there. I’ll wash the stuff from my garden thoroughly, and we won’t go play in the woods for a day or so after each treatment, if that’s what it takes.