"He was said to be generally dirty in appearance and appeared shaky and agitated as though he may have been under the influence of drugs."
Sure, open your door to those who look that way?  (smh)   Actually, soon after I moved to Eugene, I chatted with these two, friendly, young, attractive women at my door.  A few weeks later, I saw their faces on the local news.  I was incredibly lucky.  Since then, I don't bother answering or just speak through the glass.      https://www.thefreelibrary.com/Two+Springfield+women+jailed+as+assault+suspects.-a0127822375