We use CleanEnviron Pest Control sorry don't have the number handy but they are in the book. They fog our detached property for mosquitoes, check all the drains for signs of breeding, check for termites and ants, etc.
You might ask the landlord who they use since they will have a record of previous treatments. I think we pay about $800 per year under our contract for six visits a year. We did have a hornets nest thingy which we had to have immolated (sp?) which cost about $150 but that's life in the tropics.
Maintenance in a house is significantly more expensive than a condo but so many other benefits.
We did find that by being good housekeepers and checking for standing water (around outdoor toys etc) that we have relatively few problems with mosquitoes and crawly things (I think we've seen 3 cockroaches in 3 years and they looked a bit lost)
Good luck!