The answer to 'DIY mouse control' is to use a combination of traps, exclusion, and sanitation to effectively manage a mouse problem in your home. Start by sealing any entry points larger than a pencil to prevent mice from getting inside, then set out humane traps baited with peanut butter or other enticing foods to catch and remove any mice already present.
Be sure to check the traps regularly and dispose of any caught mice properly. Maintain a clean, clutter-free environment and store food in airtight containers to remove potential food sources that attract mice. If the mouse problem persists or you're uncomfortable handling the traps, it's best to call a professional pest control technician who can assess the situation and provide more comprehensive treatment.