Ants are a bitch for sure there are several bug bombs you can use. Then spray the outside of your room with diazepam and soak it in. That will keep them from coming back for some time. I spray twice a year around my whole house to keep them out.

Pyrethrum Fogger is safe to use even up to the last day of harvest. Itâ??s called PCO fogger or you can use the spot stray called X-Clude Spray.

They sell it at Discount Hydro
http://www.discount-hydro.com/pestcontrol.asp

Hope that helps you dude.