We have a three months warranty on leaking. Obviously not when your dropping and throwing your shaker around like an idiot.
The shakers are all dishwasher proof. Printed logo’s do fade a lot quicker when put in dishwashers, but that’s up to you.
Steel shakers are coated. Which means hitting it against hard objects might damage the coating and it will start to peal off.
Treat your shaker how you would treat your significant other and you’ll be fine! (In most cases…)