How to Advertise to Your Competitor's Customers

Here’s how it works. A virtual boundary gets drawn around your competitor’s location. Their showroom, their store, their parking lot. Every smartphone that enters carries an advertising ID, and those IDs become an audience. From that point on, those people can see your ads across the websites they visit, the streaming video they watch, and their social feeds.

Think about who’s in that audience. Nobody wanders into a flooring showroom or a med spa by accident. Everyone who walked in is actively shopping the category, this week, in your market. They did your audience research for you by physically showing up.

Most advertising guesses. It buys demographics (“homeowners 35-65”) and hopes intent shows up. Competitor geofencing inverts that: it starts with proven intent and works backward. The person already demonstrated they want what you sell. The only question left is who they’ll buy it from, and that’s exactly the question good advertising can influence.

The ads themselves should be your normal ads. Your brand, your offer, your best work. Never reference where the audience came from. An ad that says “we know you visited our competitor” would be unsettling and ineffective. An ad that simply shows up, relevant and well-made, in front of exactly the right person, is just good marketing with better aim.

The same approach works on any location your buyers visit. Trade shows and expos, where a three-day event becomes a year-long audience. Complementary businesses, like targeting a garden center’s visitors if you build patios. Specific neighborhoods, like the streets around a job you just finished, where your work is visible from the sidewalk.

Location-based audiences come with location-based measurement. Foot traffic reporting shows whether the people who saw your ads physically visited your business afterward. You’re not guessing at attribution. You’re counting arrivals.