Stainless steel grease trap units cost 60% more upfront but outlast plastic by 300%. Plastic grease traps cost 40% less than stainless steel, but hydrogen sulfide corrosion kills them in 3-5 years while quality steel units run 15-20 years. Key Takeaways: Stainless steel grease traps last 15-20 years vs 3-5 years for plastic under hydrogen … Read more