Best dye for nappies.

I managed to Puck up a bin bag of Motherease One size nappies for £2 at the local Steiner Advent fair yesterday.
So I now have 20 nappies which need a lot of tlc. I'd like to dye them but was wondering what type of dye is best. Is Dylon ok? Also if I wanted to do tthen tie dye style, what would I use?

Procion dye you can get it from eBay will do both solid or tye dye x

Fab. Thanks Sally. Will have a look tomorrow.

I used Dylon on some Sandies and they came out great with no problems after x

I used Dylon on my MEOS which worked well