Combat utilizes two effective ingredients to solve your ant and roach problems: fipronil and hydramethylnon. While the chemicals are different they are both fast and effective.
Hydramethylnon is a slow-acting stomach poison which takes around 24 hours to kill ants. This allows bugs to survive long enough to take the bait back to the colony and share it with their nest mates, killing off the entire population. Because it infects the ants or roaches that have not had direct exposure to the hydramethylnon, it is said the ingredient has a high secondary kill rate. Hydramethylnon is used in Combat Source Kill Ant Bait Stations, Source Kill for Small + Large Roaches, Source Kill for Large Roaches, and Source Kill for Small Roaches.
Fipronil is the fastest active ingredient on the consumer market for killing ants and roaches. The insect eats the bait and the fipronil disrupts its central nervous system leading to death within hours. When the poisoned critters heads back to its nest the fipronil is transferred to the others and your insect problem is solved. Fipronil is used in numerous Combat products including Source Kill Max for Large Roaches, Source Kill Max for Small Roaches, Source Kill Max Ant Bait, Source Kill Max Ant Killing Gel, and Ant Killing Bait Strips.