If it's old and dirty, if the shoes get moldy and if it doesn't hold enough, then yes you should get rid of it. if you want suggestions for a replacement, please post pics of the area and an idea of how many shoes it needs to hold.

Just off the top of my head, have a look at Ikea shoe cabinets. ( Also just google shoe cabinets).

There are so many options and probably one would work great in your space. They're so streamlined it's hard to believe how many pair of shoes they contain nicely.Search results for shoe cabinets Ikea