diff --git a/man/man8/zpool-labelclear.8 b/man/man8/zpool-labelclear.8
index b807acaaede..65b2f6c4fd3 100644
--- a/man/man8/zpool-labelclear.8
+++ b/man/man8/zpool-labelclear.8
@@ -50,6 +50,15 @@ is a cache device, it also removes the L2ARC header
 The
 .Ar device
 must not be part of an active pool configuration.
+.Pp
+This overwrites pool metadata, making all data on the
+.Ar device
+inaccessible without specialized recovery tools.
+Unlike
+.Nm zpool Cm destroy ,
+this cannot be undone by ZFS tooling.
+Only use this when you don't care about the data on the
+.Ar device .
 .Bl -tag -width Ds
 .It Fl f
 Treat exported or foreign devices as inactive.
diff --git a/man/man8/zpool.8 b/man/man8/zpool.8
index 3bfef780b29..4b07f96bbcb 100644
--- a/man/man8/zpool.8
+++ b/man/man8/zpool.8
@@ -108,7 +108,9 @@ specified.
 Destroys the given pool, freeing up any devices for other use.
 .It Xr zpool-labelclear 8
 Removes ZFS label information from the specified
-.Ar device .
+.Ar device ,
+making all data inaccessible without specialized recovery tools.
+Cannot be undone with ZFS tooling.
 .El
 .
 .Ss Virtual Devices