I think with votives I do 4 down and 4 accross.. they are bigger and a bit more odd shaped. I don't make many votives as the market if more for melts. I use a lighter shrink that allows the scents through. No, fragrance doese not mix. My bins hold 100 tarts easily.. amd separately. If they are thwon together.. yes, the scent can kinda get muddy. Talk to Art.. he will make recomendations based upon what you need it for.