I had this problem of cockroach and ants in my house. The ants used to be all over in the kitchen> my neighbors recommended this Godrej pest control as they tried it and were very satisfied with it. I called up and paid for a 2BHK flat rate to them. Thats the way the work here.
So they came and put some dots everywhere. There was no smell, we didnt have to move the furniture and it finished in 30 mins flat. The person also put some solution fo rthe lizards on the windows which did wonders.