The German roaches is the worst.But dont expect one can of Hotshot can help you.You need at least four cans.Take all the food out from the kitchen.Empty the kitchen cabinet,because that were you need to fight them.The kitchen cabinet is their home and their restaurant as well.Spray the whole can in the kitchen cabinet and close it.Do the same thing again tomorrow.You can spray at least one can in the bathroom.Because the main problem is the kitchen not in the bathroom.Make sure you close the kitchen cabinet after you spray it.