We don't have chiggers. Ticks are a real problem, however. The Admiral and our prior dog both tested positive for Lyme Disease. I've pulled two ticks off her and lord knows how many off our dog - but notably NONE since we started using Seresto collars on the dog . . . which are unfortunately ghastly expensive ($58). Active ingredients: Imidacloprid and Flumethrin. This is amazingly effective.
https://parasitesandvectors.biomedcentral.com/articles/10.1186/1756-3305-5-102
If you have a little dog I'd consider snipping off the excess and tucking it in your pants pockets!
I use a product called All Terrain Herbal Armor on my exposed skin. It keeps the flying insects away. May prevent a tick from attaching. May.
My pants cuffs I spray with a nasty product by Sawyer that is a squeeze spray Permerthrin. Seems to work. Supposedly kills, not just repels.
It is a synthetic version of pyrethrum. Which is bad, bad news for cats. You shouldn't put it on your skin or any clothing that will be in contact with the cats or washed with other clothing that will.
Supposedly the Permerthrin is not
as toxic to cats, but it will still be fatal with enough exposure/contact. So I keep my treated clothing in the cellar where the cats don't go.