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A blinking, or twinkle, bulb makes Christmas lights blink. Usually, this type of bulb has a silver or red tip, making it easily distinguishable from other non-blinking bulbs. Most packages of Christmas lights come with additional blinking and non-blinking bulbs. Additional bulbs can be purchased at a hardware store or online retailer.

If you only need strands in safe and easy-to-reach locations and are sure of your electrical system, you can probably purchase and install lights yourself. To do this, carefully test your outlets to ensure there aren’t any sparks or other concerning issues. Your budget might also influence this decision, as going the DIY route can be significantly cheaper.

While DIY Christmas light hanging is possible, there are a few reasons why outsourcing this project is in your best interest. First and foremost, your safety is essential. People who are physically unable to hang outdoor lights should consider hiring a pro for this job. Also, homes that pose a safety hazard, like multiple stories, should have a professional tackle the lighting project.

Additionally, hiring a professional holiday lighting expert is a great idea when you won't be able to maintain your holiday lights throughout the season, as many pros include repairs as part of their rates and packages.

You can take a few steps to prolong the life of your holiday lights. Make sure to replace burnt-out bulbs as quickly as possible to avoid overloading the rest of the circuit and knocking out more lights. Before packing them up each year, plug each strand into the wall to confirm everything is still working. Wrap the lights carefully back into their original packaging or something similar—winding a strand tightly together or leaving it to hang loose in a storage bin can lead to frayed or damaged wiring.