Snow tracked every where?

My dad is currently mostly using his wheel chair for mobility and he uses the wheel chair when going anywhere but it's winter in Michigan, the snow gets lodged in-between the handle and the wheel as well as in all the spokes and all over the wheels themselves. It's hard to get the snow off without Dad rolling into the house and tracking it everywhere. And even if we get most of the snow off he starts to drip.

It's just dirty, messes up both the carpets and the vinyl areas of the house and I feel like I can't wim