Before you throw it away, Try it and might work on UDUS too. Boric Acid kills Roaches very well.

You will get good deal on Walgreen, get 3-4 of them and spray all over the furniture, beds and possible places they will be hiding.  Leave for couple days and spray again. 

Ask your landlord to have bug spray. If landlord is going to spray it, h/she should spray all adjoining rooms too. Otherwise they will move to other room and will return back.