A pea-sized dab in the right crack does more than a bead along the baseboard. Where to put fipronil gel, how much to use, and what the next three weeks should look like.

A roach crossing the kitchen at midnight is usually the visible edge of thirty more behind the hinge. Here is why the count climbs so fast, and which baits actually collapse it.

Roaches are not wandering your kitchen at random. They follow a route between food, water and a crack the width of a coin. Map that route and the infestation stops being mysterious.