Well, there is was a reason old timers in the Ozarks did a spring burn off of grass and brush on their property, which was to reduce the number of ticks and chiggers.
This lists some lawn spray solutions none of which I have tried:
https://bugspray.com/articles98/chiggers.html
7 natural tick remedies from Farmers Almanac.
https://www.farmersalmanac.com/7-natural-tick-remedies-work-27452
One suggestion was to eat garlic...Ticks do not like how you taste apparently! I have tried it for cooking, but not for ticks. (Let me know!)
I love garlic. We also have a TON of wild garlic in our lawn. Maybe if I smear it on...
My Grandpa used to use coal oil around his ankles to keep the chiggers at bay.
I don’t recall what he used for ticks, except if there was one attached, we taped a cotton ball soaked in nail polish remover (acetone based). They turned loose after a short period.
All itchy bug bites got camphophonic applied liberally.