These refill cartridges are to be used with the portable mosquito killer by lifesystems and come in a pack of 5 ideal for camping and travellingthis refill pack of 5 mosquito tablets is a must for those into travelling and exploring used with the portable mosquito device these cartridges will see you through your travels with confidencecolour swatchassortedadditional notes5 cartridges per package restrictednobrandlifesystemscolourassorted