You should only use debt consolidation if you plan to put the maximum amount possible down on your debts every month. Yes, your overall monthly expenditures will go down, but that should only remedy the negative balance you have every month. Otherwise, use any extra money to put back into paying off your debt.
Avoid debt consolidation agencies that pay their employees on a commission. A counselor who is motivated by a commission will be tempted to offer you more financial products than you really need. Find an agency that does not motivate counselors with commissions so you can get an unbiased opinion and useful advice.
If you are unable to manage various debts and meet your payment obligations each month, you may want to consider debt consolidation. This is a popular way to reduce multiple bills and payments into an affordable single monthly payment. Sometimes you will even have your overall debt reduced with debt consolidation.