Continue to enjoy the cleaning power of the ecoballs 240 and top them up with the ecoballs refills 360 washes when the pellets have dissolved simply replace them with these refills these refills are suitable for ecoballs 240 and must not be used on their own without the ecoballs units the refills give you the possibility to reuse your ecoballs time and time again it is even more eco friendly by eliminating the need to throw away plastic casing and saves you money by not having to buy ecobal