Yea, if you don't plan on takign a break midday, I would just carry it around with you to apply again, because it's in the morning - dawn and the evenings when the mosquitoes are at their worst. They had a flyer in the room at CSR that was a warning about applying the repellent due to West Nile and it said on there that WDW does spray for this once a day but just in case, please use caution and try to cover up or spray to prevent any accidental exposure. I didn't bring anything and now I have a ton of bites to show for it.