This can result in heavy infestations and eventually death of the tree.

Heavy infestations can kill branches and even cause trees to die.

A mat of the weed can be quickly eliminated in heavy infestation.

Heavy infestations give the trees a ragged appearance and destroy their beauty.

Heavy infestations of Demodex can arrive in adolescence, and could last up to middle age.

There is a heavy infestation of obnoxious and unpleasant people in television commercials this season.

T. canis usually does not present any major problems to the host, however, can be very irritating in heavy infestations.

Nowadays the policy is to spray only heavy infestations, and only at strategic times.

Heavy infestations may give the tree a bushy appearance.

Testing in the 1900s revealed very heavy infestations in school-age children.