I was extremely uncomfortable when anything in the house came in contact with anything from outside that hadn’t been cleaned. I changed my clothes when coming back home, I washed my hands each time I touched something that someone (whom I didn’t trust to remain clean) might have touched.
I also worried about my children’s minds getting contaminated by harmful thoughts, so I would make sure they only watched things on tv that I approved of, and not the news or ads or any program I thought of as propaganda. This was until they were 12 and 10. None of our friends came over anymore. Eventually my ex-wife had enough and left.
But now I’m cured. Didn’t take a single pill, too. My son brings his friends over and it doesn’t bother me. I’m comfortable coming back from the shops, not washing my hands, and getting on the computer. Cured!
I had other issues too, this "OCD" was not the worst. My story is on YouTube, in a series of videos, so all can learn what worked for me. A short video to start with maybe, is titled:
Meds not enough? Get the knife! Doctors misguided on "Obsessive-Compulsive Disorder", Depression
I’m happy to answer any questions!