Tommy is right, no need to wash it. I mix it dry with dry milled peat (wear a dust mask) then pour it into my bog and fill it with water. Than you spend a lot of time up to your eyeballs in peat and perlite trying to get the peat to absorb the water. If the peat is fresh, its pretty easy but my peat always seems to be 10 years old.
Oh, and its not the perlite that gives up the ghost, its the peat. I am going to have to do some replacement this summer (after 4 years). That should be fun.
