Unless the local AHJ (Authority Having Jurisdiction) has prohibited its use the answer is, yes. SaferWood treated wood building products are ignition resistant and comply with IWUIC.

Per the International Wildland Urban Interface (WUI) Code Section 504.3 Protection of Eaves: Eaves and soffits shall be protected on the exposed underside by ignition-resistant materials or by material approved for not less than 1-hour fire-resistance-rated construction, 2-inch (51 mm) nominal dimension lumber, or 1-inch (25 mm) nominal fire-retardant-treated lumber or 3/4-inch (19.1 mm) nominal fire-retardant-treated plywood, identified for exterior use and meeting the requirements of Section 2303.2 of the International Building Code. Fascias are required and shall be protected on the backside by ignition-resistant materials or by materials approved for not less than 1-hour fire-resistance-rated construction or 2-inch (51 mm) nominal dimension lumber.