Assuming it is a showing, not entry to take pictures or anything of the sort (unless specified in the lease of course).Not allowing entry is a violation of the Act, and you can serve the tenants with an N5 (Notice to End Tenancy for Substantial Interference with Landlord's rights).You have to give them a 20 day notice period, but they have 7 days to "correct" their behavior, and on the 8th day you can file at the LTB.

Expulsions for bad behavior were rare.For example, the school had the policy of students on financial aid were deemed unable to afford a car.

:Isn't it up to the owner to be able to decide that he doesn't want it as a behavior in his property ?

If the tenant has a respectable history of tenancy with you and you’re willing to consider allowing the pet, I like the idea of a prepaid pet cleaning fee of $250 and additional $250 refundable  (motivation for the tenant to manage their pet’s behavior) deposit.However, none of this matters if you can’t be comfortable with pets in the home.

He also harassed the Tenant in the Complex’s parking lot.The Tenant called the police about the Harasser’s behavior.

3) sending alarms about behavior and/or his choice of friends.I would give notice that any breach of lease terms will be grounds for eviction, no third chance.

Ofcourse the guy was BEYOND PISSED, and it is indeed my fault for not eliminating him immediately after I saw the eviction pop up and I suspected him in general of being a compulsive liar.But now I feel much better, and would rather have my property sit vacant for another week or two than rent to a potential constant headache. 

And of the investors I have found so far, they don't understand the market, buying behaviors, or why they are making money.

However, id add to keep making offers...we were chosen once over others (we offered 5k above asking) because the sellers had worked with our lender of choice previously and liked their behavior. 

Look at wages/employment and consumer spending and behavior though.