doing damage at night? never sleep ah ur dogs? looks like they have tons of energy. r they your guard dogs? i will worry if u let them sleep everywhere outside the house. how if get stolen?
scold them in the morning after is not good as they cannot relate. i could only suggest u to place a playpen, i know u have a big house but if u cant supervise, then a playpen is a very good solution. if u want to pay RM2000 every month reparing your car, then i don't mind lah.
some ppl say putting dogs in play pen is cruel, it's not! proper and big area for the dogs to romp around esp for 2 naughty dalmations, it's the best u can do for the dogs and your environment.
well yes there are a lot of spray, the other option is to smear ur car with tabasco sauce or white vinegar. now this will further damage your car paint. and based on my experience, big dogs loves those spray that they say worked, tabasco or white vinegar.
hope this helps