The problem is you need a bailiff to legally evict, and they won't do anything without an order. If you try to evict without the bailiff, you are breaking the law.
It's easy to talk tough in these situations, but the reality is that once you're stuck with a bad tenant, the legal options are extremely limited. The buddy above who had to eat a mortgage payment for two years was desperate enough to consider enlisting 'professional' help to intimidate the tenants into leaving (I know a guy who knows a guy), but ended up chickening out for fear that these 'professionals' would then stick around to demand ongoing fees in some capacity.
Even renovictions and 'own use' evictions require a hearing in front of the LTB if the tenant refuses to leave. There are many stories of people buying houses with existing tenants with plans to move in, only to be stonewalled by the LTB and end up homeless for months and months while they wait for hearings (which are often postponed if the tenant is clever).
(As a landlord, your best protection is preventative. Another buddy rents a few houses, and has mostly been able to avoid any unpaid rent. His advice is first to personally check credit reports in detail, call every every reference (at verifiable business numbers, no cell phones) and dig as deeply into their personal lives as possible. Look at Facebook, Instagram, etc. for long-term indications that the prospective tenants are normal, functioning members of society. If anything is missing, looks fishy, doesn't have a long history, ANYTHING beyond normal stuff, and they're dropped from the list, fair or not. Second, he sets the rent at slightly below market to make sure he gets the best tenants. If something is a deal, good tenants will want it. If something is a stretch (greedy landlord), you end up with desperate tenants and big problems later. Third, he meets and chats with prospective tenants multiple times (minimum of three), trying to keep things casual, but always looking for stories not matching up, or other hints of duplicity. Last, he no longer rents places too far from home. He had a place in St Catharines that was rented by students, and had problems with significant damage to the property and a struggle to get the parents who co-signed to pay up. Now he only rents places he can easily pop into on a regular basis to catch signs of neglect early. In the end, you play your odds, and nothing guarantees protection.)