Get this. Been using it for years around the perimeter of the house, door sills etc. Use a garden sprayer and spray every month in the Spring, Summer, and into the Fall. Great stuff.
https://www.domyown.com/suspend-sc-p-40.html?keyword=suspend sc&gclid=CjwKCAiA9aKQBhBREiwAyGP5lbkKF02o_641wOww3TPBLXPleQvJB5FdbZNn3Ir1s0ftj6C5RkbR8BoCJFwQAvD_BwE
eta- the residual it leaves is transparent, so it wont leave anything visible on the surfaces. That was one of my priorities when I selected it, given I have a log home.