The Tundra product is intended for home use, and leaves a foam residue. There are no easily identifiable ingredients from the product brochures, so there is no way to know if this product is safe for use in an enclosed environment such as an aircraft cockpit. The MSDS refers to the active ingredient as FA101X, whose chemical structure is protected by "trade secret." All that can be deciphered is that it is apparently a water soluble alkaline liquid or solid. A quick literature search of fire-suppresive alkaline materials reveals substances like poly-fluroalkylsulfonamido amines. These are not things you likely want to inhale in a closed space.
In addition, there is no pressure gauge on the unit, so there is no way of knowing if the unit is depleted or ready for use. The recommended cockpit fire extinguisher is a Halon unit which is highly effective at interrupting combustion without creating an asphyxiation risk in an enclosed space. I carry a small Halon unit in my cockpit. I suggest you do likewise.