We don't have bedbugs, cockroaches or ants because of what we do have: house centipedes. They eat everything. Given that they bite (I've never been bitten) they're not exactly great to have around, but cockroaches and bedbugs are truly disgusting.
Centipedes are very common in Toronto basement apartments. They look absolutely ghastly and their bite is somewhat painful and itchy, but yeah they are ravenous and great at controlling other insects. If you get way too many of them though... usually means you have another problematic arthropod invasion.
