Waterproof Washing Detergent

[Parkmama]

What does everyone use to wash waterproofs? Need to wash garden cushion covers and don't want to wreck them

We use something called NikWax to wash waterproof clothes, eg hiking trousers.

Shampoo.

Nikwax you can win sachets to try on their website - very useful .

NikWax on waterproof clothing, but don't overly rate it. Not sure about using it for cushions though, I'd probably try to find something designed just for that.

Nixwax or Dripak liquid soap.