How long will the water repellent last?

I'm going to buy a water repellent and apply it.

How long will the water repellent effect last?

There are Mercury and Meteor, so using meteor will last longer, right?

725 2017-07-20 Gentleman

If you use water repellent, you can think of the expiration date for about three years.
Think of it as working again every three years.
I don't know where you work, but you can't use meteors in cities.

Gentleman 7 years ago 0

A. 2

If you want it to be water-repellent and last for a long time, latex or paraffin wax is better, although the work is tricky