MEMORANDUM **

John E. Barnhouse, a Washington state prisoner, appeals pro se from the district court’s judgment dismissing without prejudice his 42 U.S.C. § 1983 action for failure to exhaust administrative remedies under the Prison Litigation Reform Act, 42 U.S.C. § 1997e(a). We have jurisdiction under 28 U.S.C. § 1291. We review de novo the district court’s application of substantive law and its factual determinations for clear error, Wyatt v. Terhune, 315 F.3d 1108, 1117 (9th Cir. 2003), and we affirm.

The district court correctly determined that Barnhouse failed to properly exhaust administrative remedies, even though defendants allegedly confiscated his pen and paper for the duration of the 20-day filing deadline, because Barnhouse waited almost two years to file his grievances. See Woodford v. Ngo, 548 U.S. 81, 93-95, 126 S.Ct. 2378, 165 L.Ed.2d 368 (2006) (holding that “proper exhaustion” under § 1997e(a) is mandatory and cannot be satisfied by filing an untimely or otherwise proeedurally defective administrative grievance or appeal); see also McKinney v. Carey, 311 *614 F.3d 1198, 1199 (9th Cir. 2002) (per curiam) (requiring inmates to exhaust administrative remedies prior to filing suit in federal court).

The district court’s rejection of Barn-house’s claim that he filed an earlier grievance was not clearly erroneous. See Wyatt, 315 F.3d at 1119-20 (“In deciding a motion to dismiss for failure to exhaust nonjudicial remedies, the court may look beyond the pleadings and decide disputed issues of fact.”).

Barnhouse’s remaining contentions are unpersuasive.

AFFIRMED.