I tried various natural and chemical (i.e. DEET) repellents when I was in SE Asia and nothing kept them off me :( One time I checked into a hotel and the staff

I tried various natural and chemical (i.e. DEET) repellents when I was in SE Asia and nothing kept them off me :( One time I checked into a hotel and the staff weren't particularly happy that a swarm of around 10 mosquitos followed me in...