According to the Mosi-Guard website, Citriodiol is more effective than and longer lasting than Citronella.

We provide guided jungle treks here at Rainbow Lodge and I would love to find a supplier of Mosi-Guard. We have never seen it for sale here in Cambodia. The nearest distributor appears to be in Malaysia.

We currently use OFF! Active, which is certainly helpful. Leeches tend not to bite where it is applied but they will continue up to places where it isn't, sometimes with unpleasant results! OFF! contains DEET, which we do not really want to use (even at only 15%). Also, although the "Active" version is sweat resistant, it doesn't stay on for long in the rain or when walking through puddles or mountain streams. Having said that, I don't suppose Mosi-Guard would either.