diff --git a/arcusd/arcusactions.py b/arcusd/arcusactions.py
index b7ef4d9..244f769 100644
--- a/arcusd/arcusactions.py
+++ b/arcusd/arcusactions.py
@@ -29,7 +29,7 @@ def unit_to_cents(unit: float) -> int:
 
 
 def clean(value: str) -> str:
-    return re.sub(r'\D', '', value)
+    return re.sub(r'[\W_]+', '', value)
 
 
 def amount_to_unit(cents: int) -> float:
diff --git a/tests/test_arcusd.py b/tests/test_arcusd.py
index be5b089..18ac870 100644
--- a/tests/test_arcusd.py
+++ b/tests/test_arcusd.py
@@ -13,3 +13,4 @@ def test_clean_phone_number():
     assert clean('(555) 555 5555') == '5555555555'
     assert clean('555-555') == '555555'
     assert clean('555?444') == '555444'
+    assert clean('-.-5544MMCCXX**''') == '5544MMCCXX'