If you own a Petoneer Fresco Pro or Ultra fountain, you need to remember that you need to replace components such as the filter, pump filter, and foam every 30 days for it to work effectively. Otherwise, the effectiveness of the device will start to decline. To make it easier for you to provide your pets with constant access to fresh, clean water, a Petoneer replacement filter kit was created. It contains 3 filters, 3 pump filters and 3 foams.