When it comes to killing cockroaches, baking soda has some limitations. For starters, it does not work immediately. The more often it is applied, the less effective it becomes. Another issue is that it can damage pipework. For this reason, it is recommended to mix baking soda with equal parts of distilled vinegar.
Another drawback of baking soda is that it does not work as well as bait traps or pesticide spray. This is because roaches may not like the taste or smell of baking soda. Using baking soda will work best if combined with food that contains low water content, such as sugar.
Another issue with cockroach control is that roaches can enter your home through many points. This makes it vital to seal cracks and holes and keep open pantry food away from roaches. Also, make sure to keep your gutters clean. Clean your gutters regularly, and keep them clear of leaves and other vegetation. Avoid adding mulch to your lawn, as this can attract cockroaches.
Another effective method is to use a cockroach bait. It works by trapping roaches by creating a thin film around their body. Place the bait near hiding areas where roaches like to hide. Alternatively, you can mix baking soda with water and place it inside cupboards, garages, and other areas where roaches like to live. This method is only effective for temporary roach control, however.