Can i start crate traning my 3 yr old dog?

i just built a new house, which has carpet through out. i have a 3 yr old male chi who for whatever reason loves to find little place to go pee. this problem has been adressed many times. from dog training school to belly bands nothing works. i just got a 10 month old female rat t and she came crate trained...i love this!!! my male dog has always slept on my bed...do you think puting him in his own crate at night will stress him out to much or should i give it a try?