diff --git a/src/Core/CoreHelper.php b/src/Core/CoreHelper.php
index 2aa31914..856eee6a 100644
--- a/src/Core/CoreHelper.php
+++ b/src/Core/CoreHelper.php
@@ -159,4 +159,18 @@ public static function GetRequestLogging($serviceContext)
 
         return $requestLogger;
     }
+
+     /**
+      * Clean up xml response
+      * @param $string
+      * @return array|string|null
+      */
+     public static function encodeUTF8($string)
+     {
+	$string = preg_replace('/[\x00-\x1F\x7F]/u', '', $string);
+	if (mb_detect_encoding($string, 'UTF-8', true) === false) {
+           $string = utf8_encode($string);
+        }
+         return $string;
+     }
  }
diff --git a/src/Core/HttpClients/FaultHandler.php b/src/Core/HttpClients/FaultHandler.php
index 50b925bc..ee9df029 100644
--- a/src/Core/HttpClients/FaultHandler.php
+++ b/src/Core/HttpClients/FaultHandler.php
@@ -197,7 +197,7 @@ public function setResponseBody($body)
     /**
      * Return the status code of the Response
      *
-     * @return Integer   The response status code
+     * @return int  The response status code
      */
     public function getHttpStatusCode()
     {
diff --git a/src/Core/HttpClients/SyncRestHandler.php b/src/Core/HttpClients/SyncRestHandler.php
index 9db38d7d..86c04f98 100644
--- a/src/Core/HttpClients/SyncRestHandler.php
+++ b/src/Core/HttpClients/SyncRestHandler.php
@@ -310,6 +310,7 @@ public function LogAPIRequestToLog($requestBody, $requestUri, $httpHeaders){
      * @return string|bool The DOM structured XML
      */
     private function parseStringToDom($string){
+      $string = CoreHelper::encodeUTF8($string);
       $dom = new \DOMDocument();
       $dom->preserveWhiteSpace = FALSE;
       $dom->loadXML($string);
diff --git a/src/DataService/DataService.php b/src/DataService/DataService.php
index 688ab41b..7ff2bfd6 100644
--- a/src/DataService/DataService.php
+++ b/src/DataService/DataService.php
@@ -47,7 +47,7 @@
 use QuickBooksOnline\API\Data\IPPPreferences;
 
 /**
- * Class DataServicd
+ * Class DataService
  *
  * This file contains DataService performs CRUD operations on IPP REST APIs.
  */
@@ -802,13 +802,13 @@ public function Add($entity)
         $this->verifyOperationAccess($entity, __FUNCTION__);
         if ($this->isJsonOnly($entity)) {
             $this->forceJsonSerializers();
-        } 
+        }
 
         $httpsPostBody = $this->executeObjectSerializer($entity, $urlResource);
         // Builds resource Uri
         $resourceURI = implode(CoreConstants::SLASH_CHAR, array('company', $this->serviceContext->realmId, $urlResource));
 
-        $uri = $this->handleTaxService($entity, $resourceURI);        
+        $uri = $this->handleTaxService($entity, $resourceURI);
         // Send request
         return $this->sendRequestParseResponseBodyAndHandleHttpError($entity, $uri, $httpsPostBody, DataService::ADD);
     }
@@ -948,7 +948,7 @@ public function DownloadPDF($entity, $dir=null, $returnPdfString = false)
             return $responseBody;
         } else {
             $this->lastError = false;
-            
+
             return $this->processDownloadedContent(new ContentWriter($responseBody), $responseCode, $dir, $this->getExportFileNameForPDF($entity, "pdf"));
         }
     }
@@ -1008,7 +1008,7 @@ public function Query($query, $startPosition = null, $maxResults = null, $includ
 
         $httpsUri = implode(CoreConstants::SLASH_CHAR, array('company', $this->serviceContext->realmId, 'query'));
         $httpsPostBody = $this->appendPaginationInfo($query, $startPosition, $maxResults);
-        
+
         if(!is_null($includes)) {
             $httpsUri .= "?include=$includes";
         }
@@ -1024,6 +1024,7 @@ public function Query($query, $startPosition = null, $maxResults = null, $includ
             $this->lastError = false;
             $parsedResponseBody = null;
             try {
+                $responseBody = CoreHelper::encodeUTF8($responseBody);
                 $responseXmlObj = simplexml_load_string($responseBody);
                 if ($responseXmlObj && $responseXmlObj->QueryResponse) {
                     $tmpXML = $responseXmlObj->QueryResponse->asXML();