Yes, the urine smell will eventually go away, but not on its own. Because urine leaves behind uric acid crystals that react to humidity, the odor will linger or return whenever the mattress is damp. You must actively break down the uric acid to permanently neutralize the smell.
Step 2: Deodorise with Baking Soda
The baking soda will now do two things: neutralise any remaining vinegar and, more importantly, absorb the last of the moisture and odour. Let the baking soda sit for at least eight hours, or even overnight if possible. The longer it works, the better the result.
To get urine out of a mattress, you need to break down the uric acid crystals that cause the lingering smell. Start by blotting up any wet spots with towels. Next, spray the area with a DIY mixture of equal parts water and white vinegar or a store-bought enzyme cleaner. Let it sit, blot dry, and cover with a generous layer of baking soda to absorb the remaining moisture and odor. Let it sit for 8 to 10 hours, then vacuum it up.
Once pee dries, it turns into crystals that cling to the mattress and stink for weeks. Clean the stain right away. The longer you wait, the harder it gets to remove the stain and smell. Baking soda, vinegar, hydrogen peroxide or enzyme cleaners work great on old urine stains.
Can pee smell permanently damage a mattress? No, the smell itself doesn't cause permanent damage if you clean it quickly and thoroughly. Using enzyme-based cleaners and proper drying methods can fully remove the smell and restore the mattress.
Clean a mattress pee stain immediately by blotting up the liquid, spraying the area with an enzymatic cleaner or a mix of water and white vinegar, and covering it with baking soda to absorb moisture and odor.
Tip 4: Try an Enzymatic Cleaner
Enzymatic cleaners bind with and destroy the uric acid. The enzyme products that work well have the correct combination of enzymes and other ingredients to destroy the uric acid crystals. It also eliminates the bacteria surrounding the urine that causes the odor.
“There are plentiful home remedies that work wonders for cleaning urine out of a mattress,” Officer says. “Better still, many of them use common household items, reducing the need to waste any time running out to grab extras. Baking soda and vinegar are two of the best go-to solutions for common urine accidents.”
No, the smell does not go away when urine dries. As it dries, urine leaves behind uric acid crystals that bond to surfaces. While the initial ammonia-like scent might fade slightly, the dried crystals remain and reactivate whenever exposed to moisture or humidity.
Deep cleaning with hot water extraction.
We use high-temperature water and powerful suction to remove urine, bacteria and allergens from deep inside the mattress. (This is why it's great to let us clean your mattress even if you don't have urine stains.)
To neutralize urine odors, you must break down the uric acid crystals in the pee rather than just masking them. The most effective DIY method uses three common household items: distilled white vinegar, hydrogen peroxide, and baking soda.
Urine contains bacteria, so if its left long enough it can develop mould. Urine contains urea, uric acid and other compounds that can be a risk. That smell of ammonia that gets trapped inside your mattress is caused by bacteria eating away at the residue of the urine.
Yes, the urine smell will eventually go away, but not on its own. Because urine leaves behind uric acid crystals that react to humidity, the odor will linger or return whenever the mattress is damp. You must actively break down the uric acid to permanently neutralize the smell.
To get the pee smell out of your mattress, strip the bedding and immediately blot up any wet spots with towels. Spray the area generously with a 50/50 mix of white vinegar and water, or an enzyme cleaner. Let it sit for 15 minutes, blot dry, and generously apply baking soda.
A new mattress smell—often called off-gassing—typically lasts anywhere from 24 to 72 hours, though it can linger for 1 to 2 weeks. The duration and intensity depend heavily on the materials used and how well the room is ventilated.
Most brands say to wait 24 to 72 hours for the mattress to reach its full size and firmness — but you can still sleep on it the first night. In fact, your body heat can help it expand faster. That said, here are a few things to keep in mind: It might feel softer or firmer than expected on night one.
Yes, dried urine has a strong, pungent smell. As it evaporates, the water leaves behind uric acid crystals that bond to surfaces. When these dried crystals come into contact with moisture or humidity, bacteria break them down and release a highly noticeable, stale ammonia odor.
The strongest urine odor removers use bio-enzymatic or molecular-destroying formulas that break down uric acid crystals, the root cause of the smell. These specialized products permanently eliminate, rather than mask, the odor.
To remove urine smell without washing, first blot up any wet spots with paper towels. Liberally apply an Enzyme Cleaner to break down uric acid crystals. Once dry, cover the area generously with baking soda, let it sit for 4-8 hours to absorb remaining odors, and vacuum thoroughly.
To dry a mattress after bedwetting, remove all bedding, thoroughly blot the wet spot with dry towels, and apply a thick layer of baking soda to draw out the remaining deep moisture. Let it air dry for 10 to 18 hours, then vacuum off the powder.
Yes, hydrogen peroxide helps neutralize urine by breaking down odor-causing bacteria and uric acid, but it is often a short-term solution. Because peroxide simply oxidizes and converts into water (leaving behind moisture), uric acid salts can be left behind, potentially reactivating the smell later.
Step 1: Blot Fresh Urine Immediately (Don't Rub)
If the pee is fresh, grab some paper towels or a clean cloth and blot the area to absorb as much liquid as possible. Do not rub! Rubbing can push the liquid deeper into your mattress layers.
To remove old urine smells from clothes, mix color-safe oxygen bleach with cool water, per package directions. Submerge the item and soak for at least 30 minutes (or overnight for stubborn stains), then wash in the warmest water safe for the fabric.
The most effective way to permanently eliminate human urine smell is by using bio-enzymatic cleaners. While household products like vinegar, baking soda, or bleach can temporarily mask or neutralize surface odors, enzymes actively break down uric acid crystals—the root cause of pungent urine smells—at a molecular level.
Hospitals eliminate urine odors using clinical-grade enzymatic cleaners and chemical odor neutralizers that break down the uric acid crystals responsible for the smell. Instead of simply masking smells with heavy perfumes, these professional products permanently destroy the odor at a molecular level.