Do roaches ever fully go away?

Yes, cockroaches can fully go away from your house with thorough integrated pest management that eliminates entire colonies including nymphs and egg cases and prevents re-entry, though they can return if conditions become favorable again or from neighboring properties, so ongoing prevention is needed for long-term elimination. German cockroaches, which are small light brown about half an inch with two dark stripes and most common indoor species, and American cockroaches, large reddish brown about one and a half inches often called palmetto bugs, will not leave on their own because they reproduce quickly with one female producing up to 300 offspring and hide in wall voids and under appliances, so without intervention they persist for months to years. However, with effective control, roaches can be fully eliminated, with moderate infestations cleared in 2 to 6 weeks and heavy infestations requiring multiple treatments over months. Achieving full elimination requires thorough sanitation to remove food, water, and shelter by storing all food in sealed glass or metal containers, cleaning crumbs, grease, and spills daily, taking out trash, fixing leaks, and drying sinks, plus exclusion by sealing cracks and crevices with caulk around windows, doors, pipes, and baseboards because roaches enter through gaps as small as 1/16 inch. Most critical is targeted treatment using slow-acting gel baits containing fipronil, hydramethylnon, or indoxacarb such as Advion and Maxforce placed near hiding spots, allowing roaches to eat bait and carry it back through feces to kill entire colony within days to weeks. Professional pest control costing $150 to $400 with follow-up and warranties provides near complete elimination plus quarterly monitoring prevents return.