How often drains clog really depends on the age and condition of the pipes, as well as how careful you are with what you put down the drains. If items that are not supposed to be flushed are flushed or if you use your kitchen sink as a garbage can, you can expect your drains to clog up more frequently. Our best advice is to use strainers over drains when you can and not flush items that are not supposed to be flushed, especially those wipes!