Tips to Keep Sneakers Fresh

I got the PB, I normally just rock the hell out of a pair or two of shoes and get my next years when they are done. I'm not a sneaker head, but I really love the Yeezys, wanna keep these fresh and obv not gonna wear them every day.

What products can I buy, I saw some water repellent sprays, microfiber towels, etc but is this worth it?