After carpet cleaning, pet odours and/or stains are more apparent. You may not have been aware that there were urine soiled areas. You may not be able to see the urine soiled areas in your carpet. If the urine salt deposits are activated by cleaning, the odour could become worse than before cleaning began. Although it is not common, this can happen. This can happen even days after cleaning is completed. It is possible to remove odours from carpets after cleaning, provided they are not in the carpet backing/underlay or floorboards. This is the most cost-effective option and does not require lifting the carpet.