Sometimes it works. Sometimes the filling seems to move and you can't get a good draw off them after cleaning. (or any draw. It's like sucking a Wendy's frosty thru a straw)
All in all, I'd say I can reuse probably 3 out of 5 of them after they're cleaned.
Now, I know I could take out the filler and re-fill. Hubby came up with a way using a cocktail straw and a burger king straw, but I try to limit the effort I'm willing to put out to re-use a $1.50 item. That's why we don't go for the "duals" or "quad core" or "tanks" ;-) I wanna keep it cheap
Still...it's possible that after the "Feds" get thru with us they may be $10 each, so we try to keep our stock on hand numbers up.