Eagle One Products are available at most Auto Parts Stores and Walmarts.
They have a pretty good line of interior cleaners and preservatives too.
I use a leather cleener and conditioner they make on my wifes car seats, in Texas the heat is terrible on leather seats but by keeping them clean and conditioned I havent had the normal cracking and peeling issues, after 4 years they still look new and unworn.
Another trick I learned when cleaning wheels and wheel wells, during washing do a light scrub on the tires and wheel wells with a scrub brush, then rinse, after drying the truck use a can of cheap spray/foaming tire shine, spray the tire and wheel well liberally (I normally use one can to cover two tires/wheel wells) let it do its job, now when you look at the truck the tires and wheel wells will look nice and clean, also for the next few weeks any water you run over will rinse down the wheel wells and continue to keep them clean, if your an off-roader and decide to hit the dirt or mud when you get home whatever mud managed to stay in the wells will rinse out easily.
I dont detail my off-road trucks, but a trick I use on them, especially in the winter is to get a bottle of baby oil, put it in a spray bottle and spray down the wheel wells, under carriage, and lower body panels with it, after a romp through the mud or a drive through dust and dirt everything rinses off easily. Baby oil is water soluable so it takes all the dirt away with it and its slick enough to stop most contaminants from being able to hold on.