The HURB garden compost system is both a product and a service. The residents of a community are encouraged to compost their organic waste through the incentive of fresh herbs and the knowledge that they have actioned a more sustainable form of waste disposal. Another benefit of HURB is the bringing together of a community, where users are able to meet their neighbours and become more inspired to become a part of a community initiative. Being positioned within a communal garden area, the HURB composting unit is easily accessible for users within their day-to-day life.
A third party company would service the HURB worm farm, through the collection of worm castings and general maintenance of the herbs, such as replacing dead plants. These excess castings would be sold for profit, financing the entire initiative. HURB is an innovative product service system, as it combines a herb garden into the design of the unit. This physical incentive can be used as a tool to initiate change - whereby the more a community composts their organic waste, the more lush their herbs become.
HURB is not only a functional product, the physical composting worm farm unit is aesthetically pleasing with the tapered design and the incorporation of plants. The simplistic style is designed to fit in with modern architecture. The white HDPE plastic used for the material was intentional due to the fact that the worms within the unit must be kept within a temperature range - they cannot get too hot. This differs from regular composting units which are dark in colour, as heat is required within the decomposing process.
The HURB unit consists of 4 trays, the working tray, two processing trays and a collection tray. Compost is placed into the top tray, accessed by opening the lid of the unit. Worms work their way to the surface to eat the compost, leaving nutrient-rich worm castings which are deposited into the processing trays, removed by the servicing company once a week. For every 10, 000 worms, 10kg of compost is processed each week. A HURB unit would contain 20, 000 worms. Nutrient-rich liquid seeps into the collection tray at the base, where a valve releases the fertiliser that can be used to nourish the herbs. This self-sufficient system provides encouragement for users to make a positive sustainable change in behaviour, through the satisfaction of growing herbs and being more morally responsible with their waste.