Addressed Josh's comment regarding disclaimer added to trace object retrieved from FDSN client.

geomagio/edge/FDSNFactory.py

@@ -313,21 +313,17 @@ class FDSNFactory(TimeseriesFactory):
 
         TimeseriesUtility.pad_timeseries(timeseries, starttime, endtime)
         # Retrieve and set metadata for each trace
+        disclaimer_texts = [
+            "DISCLAIMER",
+            "This is provisional data. Any data secured from the USGS database that are identified as provisional have not received Director's approval and are subject to revision. Source and Authority: U.S. Geological Survey Manual, Section 500.24",
+        ]
+
         for trace in timeseries:
-            if "comments" in trace.stats:
-                trace.stats.comments.extend(
-                    [
-                        "DISCLAIMER",
-                        "This is provisional data. Any data secured from the USGS database that are identified as provisional have not received Director's approval and are subject to revision. Source and Authority: U.S. Geological Survey Manual, Section 500.24",
-                        "DISCLAIMER",
-                    ]
-                )  # input string
-            else:
-                trace.stats.comments = [
-                    "DISCLAIMER",
-                    "This is provisional data. Any data secured from the USGS database that are identified as provisional have not received Director's approval and are subject to revision. Source and Authority: U.S. Geological Survey Manual, Section 500.24",
-                    "DISCLAIMER",
-                ]
+            if "comments" not in trace.stats:
+                trace.stats.comments = []
+            # Check if the disclaimer is already in the comments to avoid duplication
+            if not any("DISCLAIMER" in comment for comment in trace.stats.comments):
+                trace.stats.comments.extend(disclaimer_texts)
 
     def _set_metadata(
         self,