I have already received this special trust by our vet to collect the urine of our cat. To always wanted to have something at home, if it is urgent, I now have myself ordered me some bags. It is easy to use and my cats accept it. I use just in case a smaller plastic box from the Swedish furniture store and the scattering covered then good soil. The removal with the included pipette is absolutely simple, as well as the refilling in the supplied container.