Health effects from breathing cat urine odour:

Anyone with a cat recognizes the strong familiar scent of ammonia lurking its way from the litter box. While the odor is less than desirable, ammonia from cat urine poses minimal risk for humans, as long as the litter box is kept clean and protective measures are taken to avoid exposure. By taking appropriate precaution and by using KatFresh in your litter box, you will avoid the problems that arise from inhaling cat urine odours. We advise cat owners to thoroughly clean the litter box first. Once cleaned, the litter box is ready for KatFresh to be installed. For optimal results, we strongly advise you to exchange and replace the KatFresh filter pads once the filter granules are saturated.

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Ammonia and Cat Urine:

Ammonia (NH3) is an invisible compound gas. When a cat's metabolism breaks down urea, it produces ammonia as a toxic waste eliminated through urine. While a cat may live upwards of 20 years, thus exposing its owner to years dealing with a litter box, concentrations of ammonia in clean litter box, the danger is minimal. Nevertheless, knowledge of the below symptoms will help minimize risk. Respiratory exposure is the most common route of ammonia exposure. If inhaled, ammonia can cause acute symptoms such as headaches, coughing, sore throat, dizziness, runny or burning nose, and a burning respiratory tract.