蛀(zhu)木(mu)(mu)虫(chong)(chong)(chong)（粉蠹虫(chong)(chong)(chong)）的(de)(de)幼虫(chong)(chong)(chong)会(hui)(hui)进(jin)食(shi)木(mu)(mu)及(ji)(ji)木(mu)(mu)制(zhi)(zhi)品(pin)(pin)；长大后的(de)(de)成(cheng)虫(chong)(chong)(chong)会(hui)(hui)走(zou)出其(qi)生长的(de)(de)洞穴(xue)（圆形、椭圆形或(huo)D字(zi)形）。部份品(pin)(pin)种之成(cheng)虫(chong)(chong)(chong)更会(hui)(hui)在石膏(gao)、塑(su)胶或(huo)软金属。就着不同品(pin)(pin)种之蛀(zhu)木(mu)(mu)虫(chong)(chong)(chong)，它们会(hui)(hui)进(jin)食(shi)不同之硬(ying)木(mu)(mu)或(huo)软木(mu)(mu)。有(you)些硬(ying)木(mu)(mu)含较(jiao)低淀粉质或(huo)较(jiao)细(xi)导管，都能(neng)免疫于雌性蛀(zhu)木(mu)(mu)虫(chong)(chong)(chong)在其(qi)树身产卵。所(suo)有(you)木(mu)(mu)制(zhi)(zhi)品(pin)(pin)如木(mu)(mu)制(zhi)(zhi)器(qi)具(ju)、木(mu)(mu)手柄、框架(jia)、家(jia)具(ju)、书(shu)本、玩具(ju)、竹竿、地板及(ji)(ji)建筑木(mu)(mu)材等都有(you)机会(hui)(hui)被蛀(zhu)木(mu)(mu)虫(chong)(chong)(chong)入侵(qin)(qin)。特别(bie)有(you)3个家(jia)族品(pin)(pin)种会(hui)(hui)入侵(qin)(qin)及(ji)(ji)破坏建筑木(mu)(mu)材、木(mu)(mu)制(zhi)(zhi)装饰品(pin)(pin)及(ji)(ji)家(jia)具(ju)，此3个品(pin)(pin)种分别(bie)是(shi)长蠹虫(chong)(chong)(chong)科(ke)(ke)、窃蠹科(ke)(ke)及(ji)(ji)粉蠹科(ke)(ke)。

　　蛀木(mu)(mu)虫(chong)(chong)（粉(fen)(fen)(fen)蠹虫(chong)(chong)）由(you)于幼虫(chong)(chong)会进食木(mu)(mu)材(cai)(cai)及后会排出(chu)粉(fen)(fen)(fen)状(zhuang)物，故(gu)有粉(fen)(fen)(fen)蠹虫(chong)(chong)之称。众多品(pin)种当中只有食骸(hai)虫(chong)(chong)科能(neng)(neng)消化纤维(wei)(wei)，其它(ta)品(pin)种则只能(neng)(neng)将纤维(wei)(wei)直接排泄出(chu)体(ti)外。蛀木(mu)(mu)幼虫(chong)(chong)能(neng)(neng)生活在(zai)木(mu)(mu)材(cai)(cai)内由(you)数月到(dao)数年不等，牠们倚(yi)靠吸取(qu)木(mu)(mu)材(cai)(cai)内之淀粉(fen)(fen)(fen)质。人们一(yi)般要见(jian)(jian)到(dao)有成虫(chong)(chong)由(you)洞口走(zou)出(chu)来或看见(jian)(jian)一(yi)堆(dui)(dui)堆(dui)(dui)粉(fen)(fen)(fen)状(zhuang)物才(cai)知道木(mu)(mu)材(cai)(cai)已(yi)被蛀木(mu)(mu)虫(chong)(chong)所(suo)侵(qin)害。洞口直径一(yi)般为0.8到(dao)3毫(hao)米，视乎(hu)不同(tong)品(pin)种而定；若然(ran)条件许可，雌性蛀木(mu)(mu)虫(chong)(chong)会在(zai)同(tong)一(yi)木(mu)(mu)材(cai)(cai)上产(chan)卵(luan)，继续其生命周(zhou)期。受蛀木(mu)(mu)虫(chong)(chong)严重入侵(qin)的(de)木(mu)(mu)材(cai)(cai)会像(xiang)被子(zi)弹打得中一(yi)样，尽是孔洞及粉(fen)(fen)(fen)状(zhuang)物。

　　粉(fen)茶(cha)柱(zhu)虫(chong)(chong)属窃蠹科，幼(you)虫(chong)(chong)能(neng)消化纤维，幼(you)虫(chong)(chong)身(shen)长(zhang)可(ke)(ke)达11毫米，成(cheng)虫(chong)(chong)则(ze)可(ke)(ke)达7毫米。跟药材(cai)及烟草甲虫(chong)(chong)非常接近，它(ta)那都属喜欢入(ru)侵仓库贮存物的(de)害虫(chong)(chong)。在晚上(shang)(shang)，成(cheng)虫(chong)(chong)会(hui)(hui)(hui)以(yi)头(tou)撞向木(mu)材(cai)去发出敲声(sheng)作同伴沟通及寻找伴侣。成(cheng)虫(chong)(chong)身(shen)体一般带红色或黑(hei)色，它(ta)们会(hui)(hui)(hui)于木(mu)材(cai)缝(feng)隙(xi)、细(xi)小入(ru)口(kou)、气(qi)孔内(nei)产卵。有时需(xu)要长(zhang)达两年去完成(cheng)生长(zhang)。粉(fen)茶(cha)柱(zhu)虫(chong)(chong)主要会(hui)(hui)(hui)在软木(mu)身(shen)上(shang)(shang)出现包(bao)括大(da)型工字(zi)梁、横(heng)梁、地基(ji)木(mu)材(cai)及好(hao)些家具；有时甚致入(ru)侵书本。一些旧木(mu)或已腐烂的(de)木(mu)也会(hui)(hui)(hui)常找到(dao)此虫(chong)(chong)，它(ta)们较粉(fen)虫(chong)(chong)喜欢较为潮湿的(de)木(mu)材(cai)（湿度(du)有14%或以(yi)上(shang)(shang)），若然家中(zhong)安装有发热或冷气(qi)装置，则(ze)可(ke)(ke)减低其(qi)入(ru)侵机(ji)会(hui)(hui)(hui)。幼(you)虫(chong)(chong)会(hui)(hui)(hui)将不(bu)能(neng)消化的(de)物质（粉(fen)末）装填在地道内(nei)。