"Chris Hogg" wrote in message
...

On 23 Jun 2015 10:07:49 GMT, "AL_n" wrote:

Caveat: It's Reader's Digest. I can also think of better things to do
with vodka!

Or if nothing there appeals, have a read of some of these:
http://tinyurl.com/ojasqwj

If anyone tries Homeguides SFgate from the above, I would suggest 3 parts
water to 1 part salt.

Couldn't figure out why 2 : 1 wouldn't dissolve out - until I read this :-

http://www.ask.com/geography/maximum...5cba303939f22e

Small point I know, but may avoid a salt-crust build-up in your sprayer.