We know that if you don't have a good sprayer to use, you won't be doing much spraying.  With this thought in mind, read on: Our Chapin 1 & 2 gallon sprayers are guaranteed forever - including all parts and labor. This sprayer has a plastic tank with a metal handle, brass wand and a brass adjustable tip.  The tank won't rust out, and the handles and wands are not easily broken. Use any type of pesticides that you want in these sprayers, but the use of bleach, acids or degreasers voids the warranty.  When you need a part, just call us, we'll send it out immediately at absolutely no charge.  Whatever pesticide you mix must be used immediately; never store any type of pesticide in your sprayer.