Spider Not Aerosol Kills Spiders
This may be the best spider killing spray that you've never heard of. Spider Not Aerosol Kills Spiders, true, but it is also packaged in a highly pressurized spray can that will easily reach high up on ceiling or corners where most sprays won't go. It will actually kill any spiders as the blast from the can will knock down any webs if they are present. The active ingredient is a synthetic pyrethrin named D-Trans Allethrin. Although like most synthetic pyrethrins, it is relatively safe and not very toxic to humans, this particular formula is very toxic to cats. The petroleum distillate oils it is mixed with give it a very high residual effect, and although safe and effective in most situations, if you have cats as pets, use something else.