Photo by Peter Jacobs
Licensed CC BY-SA 2.0
I'm more than happy to welcome them because they are insectivorous and, as a gardener who tries not to use any sprays or poisons if at all possible, I need all the help I can get in controlling pests naturally. I'm not completely pure in this as I'm occasionally forced to use Dipel (a naturally occurring bacteria that is fatal to caterpillars like those of the Cabbage White butterfly but has no effect on anything else and I confess I did spray the swarming big headed ants (yes, that really is their name and they are a exotic and significant pest here) out on the paving a couple of days ago although I'd probably have left even them alone if they hadn't swarmed over my feet and bitten me. Mind you if they excavate much more under the paving they are likely to find me less accommodating.