Without sounding like the 'Merchant of Doom', you can do the live in, do the course and pass the exam; but it won't make you a pest controller, or a businessman
There are far too many folks being taken in by the 'lure' of a future of certain success by these course offers
If you've got an aptitude for form filling, can retain basic knowledge, and have a basic degree of common sense you can make a reasonable living working for someone else in the pest control industry.
If you've got all of the above, plus the ability to sell yourself, combined with some fairly rudimentary busines