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Challenge London School of Hygiene and Tropical Medicine Challenge: Better Pit Latrines using Black Soldier Fly Larvae
London School of Hygiene and Tropical Medicine Challenge: Better Pit Latrines using Black Soldier Fly Larvae
STATUS: Awarded
Active Solvers: 266
Posted: Dec 09 2011
Challenge ID: 9932860
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This Challenge is sponsored by the London School of Hygiene and Tropical Medicine as part of its Sanitation Ventures project ( funded by the Bill & Melinda Gates Foundation. This Challenge seeks a solution that will enable the contained presence of black soldier fly (BSF) larvae in existing pit latrines so they can digest waste and reduce latrine fill rates. Such solutions will greatly enhance the lives of people who live in the most vulnerable communities in developing countries for whom pit latrines are often their only sanitation choice.

This is an Ideation Challenge with a guaranteed award for at least one submitted solution.



As part of a global initiative to slow down or prevent filling of pit latrines, the London School of Hygiene and Tropical Medicine wishes to receive designs for an affordable and user-friendly system that will allow black soldier fly (BSF) larvae to be used to reduce waste in mass pit latrines and then be harvested and used elsewhere as an economic resource. Latrine users or service providers would add farmed BSF larvae to latrines, either at regular intervals or as a remedial measure to tackle a rapidly filling pit. They would then be removed before pupating. More details are provided in the detailed challenge description. 

This is an Ideation Challenge, which has the following unique features:

  • There is a guaranteed award.  The awards will be paid to the best submission(s) as solely determined by the Seeker. The total payout will be no more than $10,000, with at least one award being no smaller than $5,000 and no award being smaller than $1,000. 
  • The Solvers are not required to transfer exclusive intellectual property rights to the Seeker.  Rather, by submitting a proposal, the Solvers grant to the Seeker a royalty-free, perpetual, and non-exclusive license to use any information included in this proposal.

After the Challenge deadline, the Seeker will complete the review process and make a decision with regards to the Winning Solution(s).All Solvers that submitted a proposal will be notified on the status of their submissions; however, no detailed evaluation of individual submissions will be provided.

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An InnoCentive Ideation™ Challenge is a broad question formulated to obtain access to new ideas, similar to a global brainstorm for producing a breakthrough idea or market survey which may include ideas for a new product line, a new commercial application for a current product, or even a viral marketing idea to recruit new customers. Ideation™ Challenge submissions are typically about two written pages, and Seekers receive a non-exclusive, perpetual license to use all submissions.

In an Ideation™ Challenge, Solvers may:

  • Submit ideas of their own
  • Submit third party information that they have the right to use and further the authority to convey that right and the right to use and develop derivative works to Seekers
  • Submit information considered in the public domain without any limitations on use

Solvers should not reveal any confidential information in their submissions. Often the Ideation™ Challenge will be followed by one or more of the other three Challenge types to further develop the ideas and gain Intellectual Property protection when the concept has been well-defined.

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