While some cockroaches try to find a specific location to lay their eggs, others carry the oothecae till the eggs hatch. If your roach problems prove to be beyond the scope of roach-killer products you can buy at the store, we will work with you to develop a plan to eliminate any roaches living inside your home as well as dealing with those that may be making their way inside from the outdoors. , here are some other signs of a German or American cockroach infestation: tiny dark-brown or black spots on shelves, walls and other surfaces. Roach eggs cannot stay dormant for too long. The pest control professionals would use a fumigation treatment to get rid of the roaches. Scientists call the stage in between the molts an instar. Suppose someone or your kids ingest a palmetto bug egg case; its not a big concern. From lino cutting to surfing to childrens mental health, their hobbies and interests range far and wide. Each American cockroach egg case holds about 16 or 18 eggs. Up to 18 months. They can also runfastwhich makes an American cockroach sighting a rather startling event, especially if youre unlucky enough to have one fly into you or run over a part of your body. The egg sacks cannot survive cold temperatures below seven degrees celsius and so stop reproducing at that temperature which is one of the many reasons they infest human homes, the heat of the home helps them reproduce all year long. Although cockroaches are closely related to termites, they are not as social as termites are. While as eggs, the cockroaches had the same features, they changed during the nymph stage, and as they became adults, females and males developed certain specific physical features to make them distinct from the other genders. If the eggs dont hatch in a couple of days, the nymphs might not emerge. A cockroach infestation becomes uncontrolled if you dont eradicate the roach eggs. Oothecae vary in appearance by the species. The HCL will absorb through the hard eggshell and will destroy the eggs inside it. The oothecae of the Smoky brown or Oriental cockroach are slightly bigger in length than those of the American or German cockroach.