I use the raid that says kills on contact
Same here
First fox I ever caught I just loaded into the car and bought home put it in the basement till
I got back from work well a couple weeks later the first fleas appeared and so began several weeks of war against them
At one point whenever you vacuumed it sounded like you were cooking popcorn when you removed the vacuum bag there were so many fleas bouncing around inside
Not to mention the dog scratching themselves raw
And all the red spots on legs and arms ect
And swore never again go through that