Survey of all registered MFIs in the locality - suggest this is done on a regular basis, and not just at the endline. You may also want to track default rates, interest rates, and any other data which may be useful for future programming. However, some of this data may be sensitive and not able to be shared.
Survey Question exploring the range of loan products available through the MFI; note that "sanitation loans" may not be a precise category but may be included under "loans for construction" - you may need to dig a little deeper
