To-Dos: Your April Home Checklist - Kick spring cleaning into high gear, and troubleshoot cooling and irrigation systems for the warmer months ahead. With lengthening days and milder temperatures in many parts of the country, April is a wonderful time to freshen up the home inside and out. From windows that sparkle to a clutter-free garage, here are 13 tasks to make the most of the first full month of spring. Clean gutters and downspouts. Having your home’s gutters and downspouts cleaned (and repaired if necessary) is one of the first important tasks to schedule this season. Clogged gutters during a rainy spring can cause water to pool, potentially damaging the roof and siding. Wash siding. Using a regular garden hose, attach a siding cleaning kit (available at most home improvement stores) to clear away winter grime from your home’s siding. Spruce up the front porch. Clean the porch floor, exterior windows, windowsills and front door. Wipe cobwebs from the ceiling and high corners. Lay down a fresh doormat and plant…