btw just a little suggestion, if you have patience, I put clear nail polish on all my tzitzis ends (about quarter of an inch length) when it’s new, best idea ever.
protects them from opening up & getting all afro & stuff.
I knot my tzitzis strings together as one, like four times, starting from beged,
then I place in washer gentle cycle with a little liquid detergent,
then i pop it in the dryer on medium, take out when beged is dry, but tzitzis is patially wet, untie knots & let dry for a little while.