How should/must Catholics handle, transport, and use holy water?

Some shrines, like the Shrine of Padre Pio Chapel in Quezon City , distribute holy water in bottles for Catholics who want some. So far the only guideline I saw in getting holy water from a basin is that to get one, you use a clean pitcher to scoop the water and pour it into the bottle. You do not sink the bottle into the basin of holy water until it gets full. But that is all. How should/must observant Catholics handle, transport, and use holy water such that it won't get desecrated? Thanks!