It sounds like he’s using. I’ve also found nail clippers and keys in odd places, as these are tools that are used to sniff coke. You can also look out for totally weird sleep schedules. Basically staying up all night, maybe even two or more days without sleep. And when sleep finally happens its for hours on end, and maybe they’ll wake up at freaking dinner time and act like it’s completely normal. Instead of getting greeted with “good morning” it’s “babe what would you like for dinner?”
At least in my experience…