A drain cleaning service in meant to unclog drains. Common drains that need cleaning are the bathtub, sink, bathroom drains, and toilet drains. Kitchen and bathroom sink drains are the easiest to unclog while toilet drains are the most unpleasant to clean. You can attempt this as a DIY project, but it is highly advisable to hire a pro.
It's essential to find a professional who is highly skilled in drain cleaning - read the above reviews and grades to find the best drain cleaner near you. You can ask friends and family for referrals to a reputable plumber or plumbing firm. Regardless of where you find them, get several quotations from various plumbers for comparison purposes. Always check the credentials and licenses with nearby certification agencies before hiring any pro.