Washing a dependeco.

I recently just got an all black AIO reusable diaper and was looking for advice on a good detergent. I'll likely have to get some because I only have tide concentrated detergent packets and really old oxiclean that I don't think will work, and probably went through chemical decomposition.

I can't use any of these detergent packets because they are concentrated and gel but is that only for washing after use? will I need a detergent for a first wash?

the other threads regarding this were closed so I started this one

I use Arm&Hammer with Oxi Clean for all of my cloth diapers including Dependeco's. Been using it for over 4 years
now with good results.

ok thanks.