I tested mycos several times, indoor/outdoor, with cannabis/vegetable over two years. I am convinced thats an improvement to my gardens, and got a big sack of it for the next years. Now its also pretty cheap! And yes, you should mix mycos and soil before using, to get life growing. Symbiotic relation will set in way faster now, after mykos already exploded in the soil. My soil is preparing since two months in my garden, before it's getting frosty I get it inside, and can use it in the winter. I like cooking the soil outdoor in mesh boxes for extra bioactivity like worms