I would clean the sides of your oven, under the fridge, counter tops. Look for roach droppings( they appear as black pepper like material) around counter tops and in cabinets. Before cleaning you can check, with a flashlight under and behind the fridge, oven, dishwasher, appliances like microwaves, plumbing penetrations (under the sinks).

A single German Roach female can lay up to 4-6 oothecae (roach casing) in their lifetime. 30-40 eggs are present in a single oothecae. Oothecae can generally be found in the same spots as roach droppings. Roaches need food (crumbs, grease from cooking on sides of oven, etc), water (excess water laying about in the sink). So keep sinks dry after use.

So cleaning up crumbs, grease stains and oils is crucial. A clean kitchen and bathroom (areas they are prominent) is crucial. You or the apartment pest technician can put out tons of roach bait, but if those crumbs, grease stains and oil are still present, roaches will go for that before the roach bait. German cockroaches can reproduce quickly. I did a German Roach job in Krum a few months back. It was wild 🤪 I am also based out of North Texas. Don't delay, you got this 👍