How to totally remove Rat urine smell fast. Expert reveals how

How to get rid of Rat smell | Odor expert shows his method used since 2002

By / February 2, 2018

Hi guys, Craig the Odor Dude here

On this page I cover how to remove rat urine odor from an attic or ceiling space, plus how to remove dead rat odor if a rat got stuck in a wall or cavity and has died. They sure can put a horrible odor off. You can also use the same principles for mouse urine odor removal.
If you want to save reading time click below
How to remove Dead Rat Odor From within a Drywall Click here

Looking to repel rates?

Rat repel machine

Updated 2019. My formulation works very well on rat urine. Along the way I have worked on perfecting my product and my methods so I can help home owners remove rat urine odor themselves easily and effectively.
I have also incorporated some ingredients into my formulation that helps you find the main contamination areas by the product foaming white on contact.

Here are the step by step instructions on how to remove rat urine odor from an attic and ceiling

Step No One: Decide if you are going to make your own product using my recipe or use a commercial odor neutralizer. We go through both options below

Option A : Use my Do It Yourself Rat Urine Neutralizer Formulation
Click here

The formulation consists of four easy to purchase ingredients that you can get from the store.
Its costs about 50 cents a gallon to make and is highly effective on rat urine.
Bookmark this page and apply the step by step directions below.

Mixing rat urine neutralizer

“Hey Ken, I have done it, The smell has gone. The problem was as you suggested, that I did not know where the main areas of contamination were so I was treating the wrong area. I sprayed the formula around and looked for the foaming as you suggested. (there was a lot of foam by the way) I then applied a heavy dose and left it over night. I repeated that the next day and one day later the odor now is 5% of what is was. It has made such a difference to us and I can not thank you enough. It know it will keep working over the coming days (love how it does this) which gives us peace of mind. Thx!!!

Alistair P, Atlanta Home Owner

Click Here To See What Alistair Used

Option B. Use a premixed commercial odor neutralizer for removing rat urine odor.

We have used this product before and recommend it, I have found a discounted product for you. Click below to save up to 30%

rat Urine Neutralizer

Direction No 1: Locate the source of the rat urine odor

We get asked how to get rid of rat pee smell regularly and a lot of the time people don’t take the time to locate the rat pee in the first instance. It is usually quite easy to locate the rat urine however if you are having trouble trying to locate the source of the rat pee then try this secret. Mix up some of my special formula recipe (Formula two) and spray a light amount onto the wooden framing or dry wall substrate.
IF IT FOAMS WHITE THEN THIS MEANS RAT URINE OR FECES IS PRESENT and you should move to step two which is to neutralize it. Rodent urine be gone!! This applies also if you are wanting to learn how to get rid of mouse urine smell as they have similar principles.


Photo above shows the DIY formula recipe foaming on urine and feces

Direction No 2: Check the area and ensure there are no exposed electrical cables or live sockets in the area you are going to treat. If the cables are completely covered in plastic you will be fine but push them aside if possible from the treatment area.

Rat urine and Feces in attic

Also ensure that any liquid you apply is not going to drip through into the room below.
Once you have done that make up a gallon of my rat urine odor removal formulation and treat the area by applying the product.

Direction No Three : Apply The Product
Investigate the sprayed areas and see how much foaming is present. This will indicate the levels of the contamination’s i.e minor equals light foaming and serious is indicated by heavy white foaming. Rats don’t pee large quantities but rodent urine is renown for being strong and pungent. This is the same when you are dealing with mouse urine odor removal.

The ability to remove the rat urine smell relates to what the ceiling or attic space is made from. Urine will penetrate to different levels depending on what the substrates are in the roof. Typically the framing is raw wood which absorbs rat urine quite easily and if the rat urine is over a long period of time then you will need lots of treatments to penetrate in as deep as the urine is and the other issue is the ceiling lining and insulation if there is any.

rat urine in attic insulation

Photo shows rat urine and feces

The video below gives a step by step guide on what treatments to use.
If the ceiling material is made out of fiberboard, plaster board or gib board or similar then that is also very absorbent and hard to remove. Easier to replace the boards in some cases

In a lot of cases we had to treat the timber 3-4 times with Formula two then once dry, seal it with a very resilient sealer to lock in the residues

How to remove Dead Rat Odor From within a Drywall

Click the image below to learn more

More often than not we get inquiries where people have a dead rat stuck inside a wall. If the rat is behind the Drywall or Plasterboard then the best option is to cut a whole and try to remove the carcass. Not easy if you don’t know where the rat is but if you do know then the best bet is follow instructions below.

Step No One for removing dead rats from within your walls:
Cut a hole in the wall where you believe the rat is (You may need to cut a few holes but they are easy to fix)

Step No Two: Remove the carcass of the rat and safely dispose off. Make sure you wear gloves and a breathing mask


Step No 3: Treat The Area with Formula Two (My secret Odor Removal Product that you can make using 4 simple ingredients)

Spray the area where the rat was located and look for white foaming. If you get white foaming then hammer that spot with the formula several times, then allow to dry. Check for smell after that and repeat if necessary. A good way to test it is to apply formula two and watch for foaming. let it settle for 5 minutes then apply more chemical. If you get the same amount of foaming it means it is a severe contamination and will either require multiple applications over a period of a day or two.

Step No 4: Once smell is treated and removed start to repair the wall
Tools you will need
* Utility Knife
* Drywall Joint Tape
* Drywall Screws
* Taping Knives 14″” and 3 ”
* An electric drill
* 1″ x 1″ dressed piece of wood to use as a backer
* Sanding disc and 220 grit sandpaper
* Quickset Joint Compound
* A square and a measuring tape
* A Pencil

  1. Cut out a piece of drywall the same size as the piece you cut out
  2. Repair Wall as shown in Video below

If you have dead rats remaining in the area then this product is perfect for the odor. (For dead Rat Odor )

Using Ozone Treatment to remove Rat Urine Odor.

If the rat pee smell is still prevalent after you treat using either method shown above then you could consider a strong and prolonged course of Ozone to remove the odor. Ozone is very effective for odor removal and can boost the whole process plus sterilize your home and serve many hundreds of useful purposes around the home

Here is the machine we use.
rat odor ozone

Enerzen Commercial Ozone Generator Review

Pros: The Enerzen Ozone generator is incredible value and has high output of Ozone enough to do the shock treatment needed to remove and minimize rat urine odor in hard to get to places.
* Although they state 5 grams of Ozone per hour on the specification sheet I believe it outputs more than that and comes with an adjustment knob for lowering the ozone output if it is too strong.
* The method for producing Ozone is via Corona discharge and this is our preferred method for generating Ozone gas as it lasts the longest and requires little or no servicing. (we have tried light bulb ozone machines in the past with limited results)
* Comes with a timer which can be very useful to stop ozone levels building up to much. We have found also that doing Ozone shock treatments is more effective than prolonged. Shock treatments are numerous blasts with a machine rather than leaving it running continuously.

As a commercial operator most machines do not have a filter on the inlet which means debris will get inside the machine and require cleaning at regular intervals if machine is used alot. we use a simple vacuum cleaner to extract the lint etc.

Buy It ! Its great for rat urine.
See more ozone Machine Reviews here

What is ozone ?
Ozone is a colorless gas comprised of three atoms of oxygen (O3). It is one of the greatest disinfectants worldwide with 3000 times the germ killing power of Chlorine OG-5000 has variable ozone output permits option of adjustable ozone level from 0-5000mg/ hr. When ozone can be found in contact with mold and mildew, pollen, odors, or other airborne germs, one of those atoms integrates with the pollutants rendering them non-active by oxidation, leaving behind pure clean oxygen. This high output ozone generator (as much as 5000 mg/hr) can assist: reduce/kill levels of airborne bacteria reduce/kill black mold and mildew reduce/kill fungi reduce/kill mold spores reduce/kill smells and viruses.
More information here


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