What are some tick safety tips?

I have a situation where I have to be in a grassy field for a few hours a day a few days a week.

I wear tall boots, socks tucked over my pants, permethrin treated leggings and brush/lint roll myself when I come indoors. So far no bites, but I’ve found them crawling on me. I also spray myself with off/deet.

What else can I do to prevent, repel or avoid bites?