Can you use Gentrol with this product?

Bo dark apples. They do not kill roaches but repels them. Works quite well. I put them in empty 1 pound soft margarine tubs. Place these under sinks behind appliances and on top of cabinets. If house is on a foundation throw some under the house. 6 to 12 would work for a large house. Pets don't seem to give them a second thought. Instruct kids: "Hands Off!!!" Believe me this works. I get mine free picking them up along the road side. Harvest time is September. One application will be active for years. Some people call them "Horse Apples"

We recommend using Black Flag Extreme Home Insect Control Concentrate or Black Flag Concentrated Fogger. You should not combine any insecticide with another product. Good luck!