Best washing powder/capsules/tablets... — Digital Spy
So now I swear by Persil Colour care and Persil whites washing powders . 0. ... We use Ariel Colour powder and Ariel Biological powder. 0 *Joe* Posts: 3,068. Forum Member 01/06/09 - 22:48 #24. We use Ariel biological liquid which we get in 10 litre packs from Costco at a very reasonable price. 0.