Right out of the box this was super simple to put together: make sure everything is locked together, add the salt per the instructions, fill it with water and go! I've been using it in our basement where we keep the litter boxes for our two cats and wow what a difference. Whereas there used to be a constant lingering cat smell, even for me who is probably nose blind to it at this point, now there's nothing. I couldn't be more pleased with how well this works and recommend it to everyone (especially other cat owners!).