Talstar P is not labeled to be used around anything edible. It can stay in the soil for up to 5-7 years so any treated soil would not be able to be used. For treating fire ant mounds in a garden you could use Martins Surrender Fire Ant Killer which is labeled for use on selected agricultural crops and food bearing plants.
Talstar P should not cause any harm or staining to flooring or other surfaces. It should only be applied to cracks and crevices indoors and not on the open floor space.
If you are indeed dealing with boxelder bugs, and what you have described does sound like boxelder bugs, then a product called Talstar P will do a great job for you. Talstar P can be sprayed directly on the plant foliage and it can be used on and in the house. We do recommend that you look up a few pictures of boxelder bugs online just to be sure they match the insect that you have spotted at your home.
Yes, Talstar P (Talstar One) is labeled for aphids and can safely be applied to plants. Y