Soap and water

• 1). Fill the bucket about halfway with lukewarm water. Add dish soap. Using a rag or sponge, massage the mixture into the cement. Let it soak in for about 10 minutes. Rinse the area with a hose or power washer. Let the area dry and the smell should be gone.
  
  
• 2). If the smell is still there after using soap, try vinegar. Pour 1 cup of vinegar into the bucket. Add 4 cups of lukewarm water. Scrub the vinegar into the cement and let it sit for 10 minutes. Using the hose or power washer, rinse the entire area.
  
  
• 3). Let the cement dry completely after cleaning.