I hear what you're saying.....
Pesticides & Pollutants Are Destroying Our Immune System
Those strips are probably better than sprays, but it couldn't hurt to use plastic gloves when handling them.
Here's a natural alternative, though only for flies.
All Natural Homemade Fly Strips
1. Combine equal parts honey, sugar and water in a saucepan.
2. Boil the mixture, stirring occasionally, until thick.
3. Remove from heat and let cool
4. Cut strips of brown packing tape, punch a hole on one end and loop a piece of string through the hole.
5. Dip the strips in the thick honey mixture and hang outside to dry, about 30 minutes.
6. Hang the strip in the area of worst infestation, and replace often.