Crossword clues for Pest 4 letters:PESTThorn in the sidePESTRaid targetPESTSteve Urkel, to the Winslows, initiallyPESTBug you want to swatPESTSource of botherationPESTConstant botherPESTUnwelcome guestPESTReal annoyancePESTTelemarketer, to manyPESTSee 55-DownPESTAnnoying typePESTBlack Flag targetPESTLittle botherPESTNo-see-um, e.g.PESTAnnoying onePESTPersistent painPESTSwattable sortPESTYounger sib, maybePESTUnwelcome visitorPESTShoo! addresseePESTNo-see-um, for onePESTNoodgePESTPainPESTOne who just won't stopPESTBug spray targetPESTOne may look to get under your skinPESTAnnoyancePESTTroll, e.g.PESTBlack Flag victimPESTNudnikPESTAnnoying personPESTExterminator's quarryPESTRoach or slugPESTRoach, for onePESTRoyal painPESTGarden scourgePESTBurr under the saddlePESTExtermination targetPESTDennis, to Mr. WilsonPESTSource of annoyancePESTInsecticide victimPESTKid brother, sometimesPESTPain in the neckPESTTerminator's targetPESTNuisancePESTExterminator's targetPESTThorn in one's sidePEST53 Down, oftenPEST21A, for onePESTGetting-on-one's-nerves type