While you may think pouring bleach is the way to go, this is very dangerous, and you should not do this. It may lead to the release of toxic fumes and damage your drainage system.
What To Pour Down The Drain To Kill Roaches
Instead of using bleach, pour a mix of baking soda and vinegar into the pipes and wait for a few minutes before pouring boiling water. The effervescence action should flush out any cockroaches living in the pipes. First, let the tap run for a while then pour hot water to clean out the pipes.
Stop Bugs From Coming Up The Drain
Fix you leaking drains. Cockroaches can live on water alone. So limiting their access to water can lead to dehydration and, ultimately, death.
How to get rid of sewer roaches
It may be a bit harder to get rid of sewer roaches. You may need to hire a professional to tackle an infestation of this scale. This is because any solution you pour down the drain will get diluted as soon as it hits the more extensive sewer system making it ineffective. Additionally, using too much roach kill may lead to the release of toxic fumes that may be dangerous to your health. Check this too: What Temperature Kills Cockroaches? Cover your drains with a stopper to prevent the cockroaches from coming up from the drain. Also, make sure that you keep your kitchen clean at all times. The only reason cockroaches will be coming up the drain is to look for food.
