Washing cashmere sweaters

[WeeSausage]

Can I please have some advice so I don't ruin more jumpers?

How do you wash your cashmere jumpers? And how frequently? I have some new-ish ones which I've worn a few times and they probably need a wash now. I usually shrink them or they go bobbly. What's the best way to avoid this? I've heard you can put them on the top shelf of the dishwasher , but I'm quite tempted just to febreeze them!
Any better suggestions?

Thanks for all the suggestions. I washed them on a wool cycle with woolite at 20°C on a 600 spin, then dried them on coat hangers in the airing cupboard. They came out ok. There's some bobbling, but nothing I can't fix.

Thanks again.

wool cycle
cold temp no spin
use a wool detergent (or a tablespoon shampoo)
when washed lay between 2 large towels and roll up like a sausage to gently squeeze out water.
then lay flat to dry.

Handwash in warm water with a squeeze of baby shampoo.
Pop in the sink and leave it alone !
No rubbing or agitation.
Rinse at same temp.
Gently roll in a towel and dry flat.

Never store unwashed items in your wardrobe -why would you put "dirty" clothes into your wardrobe ?

Wash and store in moth proof bags between wears.