Could ant infestation be caused by the shrubs being chopped down in our garden?

Our Landlord has recently removed ALL shrubbery from our front yard, which is directly underneath our kitchen window. We have since been invaded with ants in our kitchen. Our Landlord has said that this is the result of general untidiness within the house (which is not the case) so could it be caused by removal of the shrubbery and the recent bout of hot weather?. Thanks :)