Combo includes: 1 Magnum Scrape-Dripper, 4 fluid ounces of Time Release Active-Scrape scent, 1 ?Scrape Hunting? Book * Drips daytime only, to get bucks to come during daytime hours * Will operate for 2-3 weeks on 4 fluid ounces of scent, depending on weather conditions * Normally shuts down during rain and bad weather, so it saves your valuable scent * No batteries required