Do guinea pigs use wheels

Don't use wheels! It will damage your guinea pigs spine and this can lead to death. Instead, when it is warm outside, put your guinea pig on the ground and put it in something like an outdoor rabbit pen. Make sure that the ground isn't covered by something so that you don't have to clean the poop off of it. They will love this because they also can eat the grass. An upside down cage (without top) or an upside-down laundry basket work well too.