What was the probable cause?
You're a complete idiot.
I'm not a cop. I don't need probable cause. I'm the damned owner. In your contract you sign, I have the right to enter and inspect the property. It is, after all, MY property.
But just to explain it completely so your pea brain can understand it, here's what went down in one case:
I own several duplex units. Late one night I get a call from one renter who is concerned about the people next door. They keep messing around out back in the wee hours of the morning dragging an apparently very heavy foot locker across the concrete patio. The locker has chains and padlocks on it and it took two men to put it into the storage closet. They thought it was very strange. So did I.
So I told the callers I would speak with them about it the next day. Later that morning, around 8:30am I knocked on the door. I spoke with the tenant that answered the door about what had been reported to me and that I was concerned about it. He said it was just some stuff he was storing and it was nothing to worry about. I then explained to him that making lots of noise late at night / early in the morning is frowned upon and to please refrain from doing it in the future. He assured me it wouldn't happen again.
Two weeks later, I get the same phone call about the same thing again. At that point, I called the police, told them everything I've just told you, and asked them to meet me at the property because I was very suspicious about what they were doing at 2 in the morning with a chained up, apparently very heavy foot locker.
The police met me there and asked the tenants what was going on. They saw me standing at the end of the driveway, so they knew it was me that had called them.
The police asked if they could inspect the trunk on my behalf to put everyone's mind at ease. One of the men that was in the duplex took off running right then. He was chased down and they were both cuffed and put in the back of the car.
I then signed a release allowing the police to enter and inspect the entire duplex and it's contents. It took about another 2 hours for a lock smith to show up and open the trunk.
In it were just short of 200 pounds of explosives. What they had it for, I don't know. Nor do I care.
But that's how it goes down, pal. That's how it works. Somebody calls me, I can go look or call the police and have them look. It's just that easy.