>What concentration of salt did you find to be most effective? 1tsp/gallon
is a ratio I’ve often heard.
I did a quick review of the literature. 0.5% NaCl appears to be
attractive, but not too high.
A tsp of salt weighs 5.69 g; a gallon of water 3785 g.
So a 0.5% solution would be 3.3 tsp/gal.
I am not making a recommendation--just doing the math. A tsp/gal would
likely be safe.
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
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