So long as you dogs go out to eliminate waste before or after eating then you will have less issues.
My dog is almost 2.5 years but I've been keeping her in a crate on the following schedule for the last year and she has never once had an accident inside her crate.
Morning we get up, depending on weather go for a quick walk giving her the chance to eliminate waste. come home and then she eats breakfast and drinks a full bowl of water. I do the rest of my morning stuff and let her out again shortly before I leave. I put her in her crate with something to do, like her ball with pieces of biscuit in it or her bone or both.
On some days I come home for lunch let her out again... but some days I can't make it and when I let her out, you can tell she was asleep right until I got home.
I feed her and let her out to eliminate.
On mornings when it's not so nice we just skip the morning walk and I let her out.
In the evening, rain, snow or sunshine we still go out running(well she runs and pulls me
)for anybody who may be thinking I don't excersize my dog very much.