The Tupperware lady probably visited us a few times, but her goal was to have US host a party, where we would reap the rewards of "free" items based on how many total sales were made. Mother wasn't interested in the party, but she did like the neat storage containers.
Insurance salesmen also dropped by, and over the years a few policies were purchased. I recently discovered a large notebook of my mother's where she had methodically recorded all the family purchases, and major events. There were notations of final payments for various life insurances, so the salesmen had been successful.
Besides the Gideon Bible salesman (which we always supported), religious door-to-door visitors usually were not selling anything or asking for donations. My parents were strong believers in their faith and could not be swayed to the beliefs of what they considered to be false doctrines. Rather than debate their religious differences, Mother usually just said, "no thank you."
Do you have a special memory of a door-to-door sales person?
"Do not neglect to show hospitality to strangers, for thereby some have entertained angels unawares."