Blood feeder – recent issue – 6 letters?

What killed 2/3’s ? population in Europe in or near 1350? 4 letters

Cockroach skins or feces can cause this – 6 letters?

Major roach pest in U.S. 6 letters?

Soaks up pesticides in restaurants, making it difficult to control pest – 3 letters?

Very small eight legged parasite – 4 letters?

answers-etim, lio,namreg,amhtsa,aelf,gubdeb – Good Luck