I found a real easy approach to any undesired solicitation - zero contact, no reaction. Works on telemarketers, panhandlers, salespeople etc.
I have no shame about ghosting you publicly when the only thing you’re after is my money. If I’m in the home generator store, sure thing bro talk to me about my home power needs. If I’m walking out the supermarket and you slide around a booth to “help me keep my home safe during unrest” nah fam you can fuck yourself.
Cold open sales is parallel to pick-up “artists” imo. You want the transactional outcome for yourself, and my consent is the only thing you’re concerned about taking care of.