I was hesitant at first about oils and how it would work with the large flat oven but this blew me away. The flavor profile is amazing if you start a little low and you seem to be able to actually stretch your oils well this way. Great for medicating a bag here and there (let it warm with the fan on for a few seconds while temp of materials gets raised or your first bag will be half warm air). These can also be used for spacers for packing smaller amounts of dry herb as well. If you want to pack a small amount of dry herb layer the herb on the oven as normal and place this pad over top to sort of hold your material flat across the bottom screen.