This is a flake type product that works extremely well. Remember to use only properly waxed traps with antifreeze because of its caustic nature. A snow like sprinkling over the set is all that is necessary, as it soon dissolves in. Remember to place a small amount in the bait hole for increased effectiveness. It is activated by moisture, so when mixed with dry dirt, it remains inactive until needed. A money-saver! This antifreeze comes in 1 pound plastic bags.