Some vacuums come with leaf blowers, which is especially good if you have a big yard with a lot of trees. Another useful feature that is not found in all wet and dry vacuum cleaners is the drain valve. If your model has such a feature, you do not have to tip the canister to empty it. The extension wand, pump, cleaning kits and hose couplings are other attachments to look for. Make a checklist when you go to buy your wet and dry vacuum . This will ensure that you make the right purchase.