Thanks to Certech, I no longer have any problem with ants inside or outside our house. Ants were everywhere in our house and we had no luck getting rid of them on our own. Kitchen counters, cabinets, bathrooms, family room.... we were going a little crazy trying to get rid of them. The company responded quickly to our call and set up an appt. within a few days. We scheduled a one visit attach on the ants. Jose N. came out and carefully sprayed with a wand outside and carefully put bait behind many light switches and sockets. The ants took the bait and within 24 hours, they were completely gone. They guarantee for 90 days and will come back at no charge. Nice people who know what they are doing. Totally worth the one time charge.