A tallit can also be dry cleaned. However, it might not be advisable to give a tallit to your local dry leaning establishment—if they are not familiar with tallitot...
Being that most clothing is not four-cornered these days, why do we purposely walk around in four-cornered garments, thus obligating ourselves to wear tzitzit?
At the synagogue, I see that many men remove their prayer shawls (tallit) outside the bathroom. Is that just for convenience or is there something more to it?