Update June 2016. 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 in my formulation that helps you find the main contamination areas by foaming white on contact.
Here are the step by step instructions on how to remove rat urine odor from an attic and ceiling
Option A. USE A PREMIXED PRODUCT FOR REMOVING RAT URINE ODORS . I have found a discounted product for you on Amazon that sells up to $155. Click below and you will get this for half that approx :
Mix up the product I make using simple ingredients and follow instructions below
Step No One
Locate the source of the rat urine odor
We get asked how to get rid of rat pee smell regularly and alot 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!!
Step No Two
Check the area
Ensure there are no electrical cables or live sockets in the area you are going to treat.
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.
Step 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.
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.
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
Drywall can be treated however if the contamination is severe it can often be easier if budget allows to replace it. 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 replacement.
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
Sylvan Variable Ozone Generator Review
Pros: The Sylvan 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.
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