The sales price of the product you have examined is determined by the seller. replacement filter for the dailytech pet cat water dispenser fountain waterfall *replacement filter for the cat fountain. keeps the cat's drinking water fresh, clean and safe. * helps you take care of your cat's health. *most of the filters on the market are made of activated carbon. but these filters are made of high quality activated carbon, resin and cotton mesh. *the water is deeply purified and safer. *this fountain filter is only compatible with dailytech pet cat water dispenser fountain waterfall.*rinse the filter with water for about 10 minutes before use, change the water every 3 to 5 weeks to clean it.*dailytech pet cat water dispenser fountain waterfall every 3 to 5 weeks depending on your usage he recommends changing it every 5 weeks. * density and high content activated carbon filter can effectively maintain water quality, * it can increase oxygen content to keep cats healthy. package includes: *1 piece of filter. maximum 10 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 10 units. more than 100 stocks are available to be sold at the campaign price. a product can be sold by more than one seller. sellers of products offered for sale by more than one seller are listed according to the price they set for the product, seller ratings, delivery status, promotions on the products, whether the cargo is free or not, whether the products can be delivered with fast delivery, and the stock and categories of the products. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.