diff --git a/spoofy.py b/spoofy.py
index db534d9..de46941 100755
--- a/spoofy.py
+++ b/spoofy.py
@@ -1,6 +1,7 @@
 #! /usr/bin/env python3
 import argparse
 import threading
+from queue import Queue
 from modules.dns import DNS
 from modules.spf import SPF
 from modules.dmarc import DMARC
@@ -8,6 +9,8 @@ from modules.bimi import BIMI
 from modules.spoofing import Spoofing
 from modules import report
 
+print_lock = threading.Lock()
+
 
 def process_domain(domain):
     """Process a domain to gather DNS, SPF, DMARC, and BIMI records, and evaluate spoofing potential."""
@@ -74,26 +77,21 @@ def process_domain(domain):
     return result
 
 
-def worker(domain_queue, result_queue):
-    """Worker function to process domains and put results into the result queue."""
-    while not domain_queue.empty():
+def worker(domain_queue, print_lock, output, results):
+    """Worker function to process domains and output results."""
+    while True:
         domain = domain_queue.get()
         if domain is None:
             break
         result = process_domain(domain)
-        result_queue.put(result)
+        with print_lock:
+            if output == "stdout":
+                report.printer(**result)
+            else:
+                results.append(result)
         domain_queue.task_done()
 
 
-def process_domain_and_output(domain, output, results):
-    """Process a domain and handle output based on the specified format."""
-    result = process_domain(domain)
-    if output == "stdout":
-        report.printer(**result)
-    else:
-        results.append(result)
-
-
 def main():
     parser = argparse.ArgumentParser(
         description="Process domains to gather DNS, SPF, DMARC, and BIMI records."
@@ -110,37 +108,43 @@ def main():
         default="stdout",
         help="Output format: stdout or xls (default: stdout).",
     )
+    parser.add_argument(
+        "-t", type=int, default=4, help="Number of threads to use (default: 4)"
+    )
 
     args = parser.parse_args()
 
-    # Load domains
     if args.d:
         domains = [args.d]
     elif args.iL:
         with open(args.iL, "r") as file:
             domains = [line.strip() for line in file]
 
-    # Prepare for processing
+    domain_queue = Queue()
     results = []
-    threads = []
 
-    # Start threads to process each domain
     for domain in domains:
+        domain_queue.put(domain)
+
+    threads = []
+    for _ in range(min(args.t, len(domains))):
         thread = threading.Thread(
-            target=process_domain_and_output, args=(domain, args.o, results)
+            target=worker, args=(domain_queue, print_lock, args.o, results)
         )
         thread.start()
         threads.append(thread)
 
-    # Wait for all threads to complete
-    for thread in threads:
-        thread.join()
+    domain_queue.join()
 
-    # Handle output for xls format
     if args.o == "xls" and results:
         report.write_to_excel(results)
         print("Results written to output.xlsx")
 
+    for _ in range(len(threads)):
+        domain_queue.put(None)
+    for thread in threads:
+        thread.join()
+
 
 if __name__ == "__main__":
     main()