With the suede protectors that you get in the spray can:
Which is correct?
- You spray it all over the shoes once and that's 'good' forever
- You have to spray it at set frequencies (and if so is it monthly or what?) and it doesn't make a difference whether they come into contact with rain or not to keep it 'active'/effective'
- You have to spray them every time they get rained on?
It doesn't say on the bottle...