In reply to ultinator:
So following on what people have said. Don't use wash in if it has a wicking line,
When it comes to the re-application of the DWR you have 3 choices and it comes down to how environmentaly consious you are. Flurocarbons make the reproofer stick like s#!t to the blankent but have been found to be harmful to the Environment and human tissue. The number of carbon chains in the product gives the product a C number. All Nikwax products are Flurocarbon free, thus C0. Nikwax use water soluble products.
The vast majority of Grangers Products are C0 except for one. Grangers Xtreme Repel is C6. This is, I'm told, about to be discontinued as Grangers have also an environmental policy (Blue Sign) that says that this is bad. It is very difficult to match fluorocarbon chemistry results (performance, durability and adherence), using more environmentally friendly materials. Grangers believe that their acrylic polymer gives as close performance as possible without the need for nasty flurocarbon chemistry, with regards to water repellence and durability,
You can read more about it here
http://www.nikwax.com/en-gb/aboutus/persistentflurocarbondanger.php but think before you buy a C6 or C8 product. Am I really that desperate to potentially get any of this?
Damage to immune system in children leading to an inability to respond to inoculations for tetanus and diphtheria
Increased incidence of cancer associated with PFC pollution
Compromised female fertility associated with PFC blood levels in women – delayed time to conception
Enlarged livers associated with PFC
Low birth weight associated with PFC
Reduced fertility associated with PFC