I've been having tons of residue issues with my locks at the beginning, they were so smelly I was scared to move :P so I tried tons of shampoos, bronner paris soap bio soap from my area but only one thing really really woked for me and honestly, it worth the order.. I am from quebc area(canada) and shipping might be a bit costly for me but its the best and only shampoo I found that work this well so I really dont mind paying twice the price of my local bio store.
www.dreadlockshampoo.com
try at leat on bar and gimme some news! I really like the tea tree one, smell good and not too strong
oh and they smell good now :P
hope it helped