If you are going to leave the water heater unused for a prolonged period of time take a sealable plastic bag and put math balls in the ball. Seal it and then poke 20 or so holes in the bag with a pin and put in inside the outer cover. I would also drape a plastic bag over the face of the heater and colse the cover on it. This should keep spiders and other bugs from nesting in the burner tube.
I am assuming you drained the heater when you winterized. When you go to use it just crack the bypass valve while filling the heater. This will keep the sediment from being kicked up and you having to clean each faucet screen.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles