Yes, it is very common that you will see more insects after a pest control treatment. This is part of the survival instinct of the cockroach. As the roaches begin to die, they will instinctively want to move their nest, and this will cause more sightings. Don’t be alarmed, this is very common and is a good thing. The more the roaches move around, the more they will get into the products placed by the pest control professional.