One of the biggest problems with the urine smell from pets is that once they have done their business on a particular piece of carpet or other floor surface area, they tend to keep returning to the same spot. With animals, scent means a lot. They will sniff around for the odor, and it is the odor that draws them back to use a place again and again.
The scent increases with each application and literally calls them to return repeatedly. Normal cleaners and detergents can do a pretty fair job if a spot is cleaned immediately, but there is always a lingering bit of aroma. You may not be able to smell it, but the pet can.
Common household baking soda works well as an odor absorber and cleaning agent for almost all household cleaning. The problem with pet odors is, if the animal has access to the area before all the smell is gone, the animal will go there again. So keep the animals away from the area you are trying to eliminate the odor from.
Another old-fashioned remedy for removing odors is to use slices of apple. The apple absorbs odor and also releases a pleasant aroma of its own that helps mask the offensive smell. Apple slices work well to get fishy odors out of ice chests too.
Lemons and their juice are another natural article that is common around a household. Lemon peel and juice can work wonders on a number of offensive odors. Lemon juice rinses work well in cleaning and deodorizing. Lemon peel can be used to help remove odors from a garbage disposal. It is best to pack the garbage disposal with ice cubes first and run them through without turning on the water. Then place the peelings from a few lemons in and turn the disposal on for about 60 seconds. Then run water through the disposal for a minute or two.
In the case of your carpet having been removed, it would be more difficult, perhaps, to locate the specific areas of offense. Try this. Wash the entire area with a good powerful disinfectant type detergent and then rinse the whole floor with clean water. Then make a robust mixture of baking soda and water and wash the entire area again. Then after the floor is dry, sprinkle dry baking soda over the entire area. Let it sit for a few days and then sweep it up and check for smell.
Now let’s move into the 21st century. There are some products expressly made for the problem of removing pet-made odors like yours. Almost all of these items are made with natural enzymes that attack the odor itself. Here are some of the details and product names that I discovered:
1. Outright is a product line that has: an odor eliminator, a separate stain remover and a third product that is a combination odor and stain remover. The enzymes are dry and activated by the addition of water. These products are harmless to humans and pets, and they are biodegradable. You simply follow the directions on the label. There are some fabrics that may be harmed by the application of these enzymes. These fabrics are listed on the label.
2. Another product is Four Paws. This product will reportedly even restore color to a carpet if treated soon enough after the accident. Another claim is that the product will protect the carpet by keeping the animal from returning to use that spot again. Four Paws also may harm some natural and man-made fibers.
3. There is another group of items that are repellents. When applied, these will keep the pet from using the area. Repellents are good for use on furniture, but again read the label to make sure that it will not harm the fabric.