On a bushwalk on Tasmania's west coast I experimented one day by putting mosigard on one leg only and then counting the number of times march flies would land and prepare to bite, rather than fly off immediately.
When I got to 10-0 I decided the stuff must be working!
For my next trip I realised I had run out of Mosigard, so I ordered some more, but I needed it in a matter of days.
The guy I dealt with (Seamus) was very helpful and made sure the package was in the post promptly and it arrived the day before I set off.
Coming all the way from Cairns, that was very impressive. Thanks!