Did oxbow change? None of my boys are interested anymore

I have 5 boys. All of them are about 4 years old and have been eating oxbow garden select pellets their whole life as well as oxbow Timothy hay. It seems like suddenly none of them are interested in either anymore and I’m not sure what to do. I went and bought new bags just incase the previous ones were just bad but it seems these new bags are not interested either. Luckily they’re still eating their daily salad and treats but i don’t want to feed them extra of either of those. Are there any other pellets anyone suggests? I do live in the middle of no where and my pet store only carries the types of pellets that have colored seeds and such in them which I would never even think about buying obviously so recommend something I can buy on chewy as that’s what I have to do in my area.