I wash all ties as is when I buy them. Just on a gentle cycle with liquid wool wash type detergent. Generally here in Australia we line dry, so that's where they go next. After that I deconstruct them....washing them gets rid of any chemical residue from being drycleaned and removes odours/dirt. This process sorts the 'wheat from the chaff' and so far have only discarded a handful (dye runs, damage or ratty fabric). This way you know how they will stand up to use. Technically the finished item can then be gently washed rather than drycleaned.