If you are spraying porous surfaces you would want to choose a product such as Demon WP. It will stay on the surface of porous areas allowing insects to come in contact with it a bit better. That being said, Demon WP also leaves a white powdery residue that is visible on dark surfaces. Talstar P is a concentrated liquid that is odorless, dries clear and is labeled for a huge variety of insects and areas making it a bit more versatile. If you need to spray plants, trees and siding Talstar P would be a great choice.
For control of larger roaches outdoors, you will usually see best results using a granule bait for the insects applied in areas such as under decks and porches and around landscaping. Niban Granular Bait is a great option for this application.
No, Talstar P Professional Insecticide cannot be used to treat for insects around boats or over areas of water such as lakes, rivers, ponds, etc. Unfortunately, there aren't any insecticides that can be sprayed directly to the outside surface of the boat, as any ingredients they contain could possibly harm the finish on the boat itself. If you have a boat dock, you can spray it with Essentria IC3 which is safe for aquatic life and would be the closest water safe product to Talstar, and covers the same range of insects. Inside the boat itself you can use an aerosol like D-Force to treat crevices and areas under/around seats and places insects tend to hide.
Talstar P Professional Insecticide is a water-based chemical and will not cause corrosion to stainless steel or galvanized metal. Keep in mind that you should not apply this product directly to food, feed, water, or sources for food or water. You also cannot apply this in a way that would contact the animals or their food or water. Keep in mind that a good fly control program includes the use of multiple control measures such as baits and traps, in addition to insecticides.
Talstar P Professional Insecticide is labeled safe for ornamental trees such as spruce trees for listed pests.
Talstar P cannot be used directly on vegetables or fruits that are going to be consumed. We do carry several products that can be used on cucumbers and other edible vegetation such as Sevin and Hi-Yield Indoor/Outdoor 10%. Always read the product label of the product you select to make sure it is labeled for the plant you want to spray and for the pest you are trying to eliminate. The product labels are available for each product on our site and you can see the links for them on each individual product page.
Talstar P is not labeled for general mites, though mange mites typically are on livestock or pets. For mange mites, we recommend Tengard SFR which could be used to treat the ground outside, as well as inside the home over a certain area. Tengard SFR can also be used on a dogs and other livestock (do not use on felines) to kill mites without harming the animal.
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