Stained fleece

[pelicano]

I've only been using fleece a short while, but it is already a bit stained. When I had bunnies I used to pre-treat urine stains on their mats with neat vinegar, and I was wondering if anyone does this with their fleece? I have also looked at this stuff:
http://www.spiritofnature.co.uk/cgi...D=fresh nappy&SHOP= &PN=3162.html#a3162#a3162