PREPARATION  ALL WEEDS should be removed.  If there are too many to remove, spray them with a Round-Up type product, at least 7 to 10 days prior to the hydroseeding appointment.  TWO days before seeding mow the weeds to no more than 1 inch tall, catch and remove all clippings.  ALL ROCKS bigger than a golf ball should be removed.  The soil should be fine graded, raked level and settled. If the soil is powder dry, sprinkle the area Lightly at least One full day before seeding to put a thin crust on the top of the soil.  The soil needs to be DRY enough for us to walk on it the day of seeding.  Be certain all gates are unlocked and your pets are in the house or garage on the day of the hydroseeding.