Humdingers located at the old Mark III van conversion facility on 44th ave between 326 and hwy 27 is a surplus store, you never know what they will have..I went in last spring looking for a shop window, didn't find what I was looking for but bought all the $3 permanone they had (10 cans???)..the stuff I bought from Sparr Farm Supply "Permectrin II" is 10% peritherin, 8 fl ounces and costs about $5..trouble is it has a slight diesel smell to it,I have some drying on a rag..if the smell disapates overnight I think it will be ok to use for hunting. I should have read the labels maybe there is a brand of peritherin without the petrolium products added??