Why Do I Keep Getting Ants No Matter What I Do?

This is one of the most common pest questions in West LA: the ants come, you spray or bait, they disappear for two weeks, then they're back. This cycle repeats indefinitely for homeowners using the wrong approach. The reason is biology, not product failure — and understanding it changes the strategy entirely.

Argentine Ant Biology Is the Answer

Argentine ants — responsible for virtually all ant infestations in West LA — behave differently from every other ant species. They form supercolonies across multiple properties, potentially spanning your block or entire neighborhood. Workers are replaced constantly from a colony that exists far beyond the borders of your property. Killing ants on your property doesn't end the infestation — it creates a temporary vacuum that the broader colony immediately fills. This is why spray-and-repeat cycles don't work.

Repellent Sprays: Why They Make It Worse

Standard ant sprays are repellent — they create a chemical barrier the ants detect and route around rather than through. The result is that the ants find a different entry point while the treated entry appears 'fixed.' Over time, the ants have explored every alternative entry point and are established in new routes that the spray didn't address. Slow-acting bait — which the ants carry back to the colony — is the only treatment that actually reduces the colony population.

The Combination That Actually Works

Professional ant control that produces lasting results combines: slow-acting bait at all exterior perimeter points (the ants carry it back and share it with the colony), targeted interior treatment at specific activity locations only, and physical exclusion of the primary entry points. A single treatment rarely solves Argentine ant activity permanently — a quarterly program that keeps the exterior bait maintained is the model that consistently keeps West LA homes ant-free.