Garbage disposers are available in two types – batch feed and continuous feed. The continuous feed variety is easier to use and allows you to drop stuff inside as the unit works. Batch feed units are different. The lid must be closed first. They are better for homes with kids and pets. All in all, this is not the only criterion to pay attention to, so check some reviews as well. Visit http://www.downthesink.com/insinkerator-evolution-compact-34-hp/, determine if this is what you are looking for or just look for different reviews. The main menu has some informative guides for first time buyers as well, so take your time.