Reserve Grimes storage units today at StorageMart. Visit us at 1850 SE Miehe Dr or call 515.986.0100 and get the First month free on select units! At StorageMart you can enjoy access to your Grimes storage unit from 6am to 10pm, making it convenient to you anytime during the day. Personalized, PIN-controlled gate access ensures only authorized customers and staff can access the facility grounds. Climate controlled storage space cools your storage unit in the summer and heats it during the winter. This type of storage is ideal if you're storing for several months and will prevent your items from extreme temperature changes.