Some beneficiaries from a cluster located in South Nyanza were formerly beneficieries of single vault UDDTs that were constructed by a NGO from Finland. However all were abandoned after recieving the double vault. This si becuase it was cumbersome to empty frequently. In addition, most were not comfortable transporting the raw faeces somewhere else (for further composting) They preffered the double vault UDDT because by they time they need to empty, the fertiliser can go straight to the farm.