I am a Male father of 3, Geographer, Master in engeneering that as a good renegade became beekeeper in 2003 because of fighting corruption I lost my job and probably will never have a job again in what I used to do: Rural Services (water, electricity and the like).
As I decided to became beekeeper when having wife, kids and a mortgage there was no way to start small and grow. So I decided to try a new model and associated with an avocado grower that need 1000 hives for pollination. Looks like I became a good beekeeper because I was invited by another grower, this time blueberry, to started in 2006 a second project for 2500 hives. I ended my relation with the avocado grower and keep on growing in hives with the blueberry producer, that became also an avocado, cherry and almond producer. We manage between 4000 and 5000 hives at Chile at the moment (you know, we grow in spring and lost hives in winter ) ...
in 2015 I was invited to assist another company at Peru, here the project is for 12.000 hives and we are already close to 9000 hives La Libertad province.
As a good engenier I like to solve problems, so started to develop diets for the bees, ways to eliminate virus, a good varroa control and now developing schemes forplanting for the bees. There is no way to get bored.
Well, the use of Oxalic with glicerin was develop by argentinian beekeepers The Prieto brothers who had been using oxalic in all there form (dribled, sublimation, etc) and with the help of another beekeeper Fernando Esteban ended up with this great Idea of mixing with glicerin and develop monoxalate that when soaked on cardboard strip became an excellent contact treatment.
I have been using it non stop since end of 2014 at Chile and end of 2015 at Perú.
Fernando and I pushed Randy to try it because we new that if it had his approval lots of beekeepers around the world will benefit with this solution. Still do not know why Randy changed the method for those towels, since it is a contact treatment It must be placed between the frames.
The way it is deployed with in the hive is directly proportional to its results. To have over 90% control you MUST cover 8 of the 11 between frames (or super) spaces. I recomend to change the strips after 15 days for a full treatment and also do sugar shaker monitoring before and after treatment.
We monitor constantly and treat when varroa is getting closer to 1% (3 varroas in 300 bees). After all this years that end up been between 3 to 4 months between treatments. Because at Perú temperature is constantly higher - much like a constant spring - we still have lots of noise in our monitoring (Varroa Bombs?) so we will change the protocol to 3 repetitions separated 12 days one from the other so as to been able to break the varroa cycle.
I end up saying sorry if I do not participate muchand lurks lots, but really I do not have much time with so many hives and people to manage ... Cheers and thanks for existing because I learn lots of you kiwi beekeepers !!!!