Beware of blowflies when you have very sligtly warm glass around. I was just making some frit & when I took the rod out of the iced water, a small piece broke off the rod so I layed it on the bench. Then a blow fly landed on the piece of glass & refused to move. A few seconds later it flew away. Then I noticed what looked like a crumb on the glass. I looked at it with my magnifying glass & found it had just layed magots. I always thought they only layed them on a food source. Weird or what ???????
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