Talstar P CANNOT be applied to anything that you will come into prolonged skin contact with, so you cannot apply it to furniture. It should be applied to cracks and crevices and perimeter of the rooms only. For treating sensitive areas like your furniture, you should use Steri-Fab which is labeled for ticks and fleas as well as many other pests and can be applied to furniture, mattresses, pet beds, and all other sensitive areas. Below is a great article on treating indoors and the products that we would recommend for treatment inside the home for fleas and/or ticks.
http://www.domyownpestcontrol.com/fleas-and-ticks-t-10.html
http://www.domyownpestcontrol.com/outdoorindoor-flea-kit-p-1349.html
http://www.domyownpestcontrol.com/tick-control-kit-p-2924.html
Talstar P will do a great job for boxelder bugs! We do not recommend that you use soap with the Talstar P or any other insecticides. The Talstar P may be used to spray directly on the plant foliage and it can be used inside and outside of the home. Please take a moment to look at our "How to Get Rid of Boxelder Bugs" article for more detailed information about this type of pest.
Talstar P (Talstar One) is labeled for gnat control. Be sure you are mixing at 1oz per gallon water. Are you seeing them indoors? If so, be sure to take any indoor plants out and let them dry. If having an issue outdoors, be sure you are focusing on areas that contain moisture and/or shade. Also, undersides of leaves on non-edible trees and shrubs. Keep in mind that part of the difficulty in handling flying insects is that you are relying on them to land on areas treated with the insecticide.
Conserve SC is a great product for treating caterpillars since it is a targeted application and is very gentle on the plants and on other non-target insects and animals. If you are going to do a follow up treatment using Talstar, then I would wait at least 1-2 weeks so that you are not wasting the Conserve application since you don’t need both products at the same time.
The most popular product for sod webworms is Talstar. Talstar is very effective on most insects including chinch bugs and it is gentle to plants. Time applications to control young larvae, if possible. Spot treatments may be applied when infestations are first detected and the damaged area is small. The treatment will be most effective if applied in the early evening when larvae begin feeding. Please check with your local cooperative extension office to see if a second generation is possible in one season in your region.
A product like Talstar P can be used to control midges (another term for blind mosquitoes) outdoors. You can spray window screens, doors, bushes, and plants around the home to help keep midges away. An aerosol pyrethrin spray such as 565 Plus or Microcare can be used to control midges inside the home.