>>2722903>>2722941>>2722813No, you can get rid of german cockroaches yourself just with a mixture in a gallon spray of Demon WP, an insect growth regulator, and acephate. Spray the baseboards of the house, underneath, and any places that bugs could habitate in, like underneath sinks and in cabinets.
If you're still seeing roaches, spray again in a month, other again in 3 months. They should be wiped out, but you could spray another time 6 months later.