Don't spray the ones you see. Use borate-based gel baits . The workers take the "food" back to the queen, killing the entire colony rather than just the scouts.
DIY is great for maintenance, but call a professional if you see: on your foundation (a sign of termites). Widespread wood damage or "sawdust" piles. DO IT YOURSELF PEST CONTROL
Focus on the kitchen and bathroom. Use bait stations in dark corners and Growth Regulators (IGRs) , which prevent young roaches from reaching reproductive age. Don't spray the ones you see