Hi. I'm very green to gardening, so I may not know the correct terminology for things! We have an 8x4 raised garden that is full of leaves and pine needles. It's mountaining over the wood sides totaling 1.5-2 feet deep of leaves and pine needles. It was supposed to be a mulch garden, I guess, but they never turned it or broke it down. It is now solid layers of water and leaves. It's become a real nesting place for mosquitoes. Because of this, I have decided to turn it into a garden. I am having a time trying to clean it out. I am wondering if I should try "turning" or breaking down the leaves now to help the soil in the garden, or should I continue to dig all of it out. Because of the mosquito problem it has caused, I am wanting to get it down sooner than later, but I want it to be successful! Any advice??? Thank you so much!