They can use any brand name containing bacillus thuringiensis, including Dipel, Caterpillar Killer or Bonide.</p><p>Holmes said there is not much a homeowner can do with infestations in very tall trees.</p><p>Residents must be vigilant in the spring and look for infestations when they begin, especially clumping on tree trunks, the early signs an infestation could be looming.</p><p>he is about all