Provide detailed information about the project. Any background you can tell the plumber, especially with regard to repairs, will help him or her determine the best solution or approach. For example, is the problem new or recurrent? Do you suspect a specific cause (e.g., an inappropriate object dropped into the garbage disposal)? Have you tried to fix it yourself? Unclutter the work zone. Your plumber will be able to operate more smoothly and efficiently if you clear out as much flotsam as possible. Keep pets and kids out of the way, too.