04:43PM | 01/03/13
Have the exact same problem. Our house is a 100-year-old home with a crawlspace. Plumbers, pest controls, checking of the crawlspace screening, all have been to no avail.

It comes usually every 1 to 3 months, but it may appear as close as every few days.

Your remarkable comparison to a ghost is interesting. That is what we call it. It is as if some invisible old person, incontinent, has come into a room and removed her depends. It is clearly distinct, different from the smell of the dead animal, Which should be called a putrid odor. It is also distinctly different from dog feces.

The "bloom" character of it is also exactly as you describe. It is simply there within a matter of a moment, and seems to disappear somewhat more slowly, completely gone within the half hour. With these simple venting of the room, opening windows and using the fans, the odor can be completely removed in about 20 minutes.

The only Hint of an answer is, after an extensive Internet search is that there is a chemical process involving water or humidity exposure to a mortar or plaster. The result is urea salts are produced. I am told that urea salts will be the actual source of the urine odor. The only problem is I cannot find a source of Water contact with either mortar on the perimeter foundation of this old house, and certainly not with the original horsehair plaster walls.

I have not checked Venting pipes from the sewage system through the ceiling. I should have all of the sewage traps filled with water. I have exhaust fans working in the crawlspace to keep it ventilated.

I hope my experience will help you find a solution. I very much hope to hear what it is. Thank you.


11:08AM | 01/09/13
Member Since: 01/09/13
1 lifetime posts
Cat Urine, consists of three, chemical parts the urea, which makes the urine sticky and allows the other two parts to create odors. Urochrome gives the urine its ugly yellow color that stains carpets, furniture the walls. The third part is made up of Uric Acid; the uric acid in the urine consists of salts and crystals that give off the extremely pungent odor that vaporizes and turns into an invisible gas. Spray’s and candles are just short term fixes until the next accident. A permanent solution, a product called AirReNu, which only requires one application, works night and day 24/7/365, removing all odors and improves indoor air quality.


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

All bookworms need a good bookmark that inspires them to keep reading. To make this colorful bookmark, cut a rectangular p... It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon