Where to buy Raid insect foggers

Not sure if this will help but in some countries they sell a poison chalk. I think I saw it here. I have used it before. Wear gloves when you use it. You can't use it if you have pets, small kids on floor, etc. But you draw a poison chalk  line on the outside of every threshold and inside of every threshold. I also drew it inside cabinets in the corners of shelves where nothing touches. You put all foods into air tight containers. You draw the same chalk line around the refrigerator on the floor. (Keeps the ants and bugs from climbing in). I did it and saw a dramatic decrease in insects over 1 week's time.

For the airborne insects-- they sell the plug in machines that look like air freshners but put insect killer/repellent into the air. It also repels other insects as well even though it is not mentioned on the packet. I keep the plugs in the drains at all times and put a plastic sheet over the in floor drains which seems to help. I have taped up the gaps under doors with the rubber blade part removed from a squeegee/window cleaner tool. Now nothing can crawl in from the outside.

For scouring powder, baking soda works pretty well as does coarse salt. CIF brand liquid cleanser works like softscrub. But I do miss Comet.