You don’t need to replace it yet — most of these stains can be lifted unless they’re etched into the plastic. Based on what you described (yellow/brown underside on plastic/melamine), here’s a realistic, step-by-step “try this before replacing” plan:

🧽 Step 4 — Magic Eraser (very effective on melamine)
Slightly wet it
Gently scrub
👉 Works like ultra-fine sanding to lift embedded stains
⚠️ Don’t go too hard — can dull the surface

🧪 Step 5 — Enzyme Cleaner (underrated but powerful)
If it smells or looks like old urine:

Use a pet urine enzyme cleaner
Let it sit as directed
👉 It literally breaks down urine proteins (not just masking)

☠️ Step 6 — Bleach (last resort)
Dilute (1:10 bleach to water)
Apply for max 5–10 min
Rinse thoroughly
⚠️ Risks:

Can yellow plastic further if overused
Can weaken finish
🔥 Pro Trick (works shockingly well)
Apply peroxide or cleaner
Wrap with plastic wrap
Leave 1–2 hours (or overnight)
👉 Keeps it wet → deeper penetration

❗ When to stop trying
If: