5 things you need to know about spider control:

  • The best time for spider control
  • The best chemicals for spider control
  • How safe are spider sprays?
  • Do we have poisonous spiders in the Northwest?
  • How much service do you really need?
  • Bonus: Safeguard’s spider treatment options.


The best time for spider control

Late summer / early fall is spider mating season. There will be a lot more activity around the outside of your home with webs hanging off of almost anything and the spiders inside your home will be much more visible as they race around the interior fighting and mating. So think beginning of August. Early Spring is when many spiders hatch out their biggest egg broods. So spray before the hatch happens, say February.

Beyond that?

Do you live next to water? You will have more spiders. Is your home surrounded by trees or other vegetation? You will have more spiders. Do you dislike spiders? The best control is obtained by using the best control materials. The best spider service for most people is quarterly.


The best chemicals for spider control

The best control materials are either natural or based on naturally occurring plant based repellents. Natural materials containing rosemary extracts and geranioil or pyrethrins, or synthetics based on those materials. The all natural material Essentria IC3 works great. The longest lasting control is achieved with suspend concentrate formulations such as Suspend SC, CY-Kick SC, or Tempo SC.

Dust formulations work well – but only in areas where they will remain dry, such as attics, sub areas, and cracks and crevices such as under and behind appliances and beneath baseboards. Never apply dusts where they will get kicked up into the air.

Notes on chemicals: The active ingredients in the best control products, are available over the counter. They’re the active ingredients in the ‘home defense’ type products. However, the home defense formulations are both more hazardous to use and less effective because of they are not ‘suspend concentrates.’ Actual field trials by the manufacturers show suspend concentrates, their most effective formulations – last 30 days ‘really strong,’ 60 days ‘pretty strong,’ and no longer work very well after 90 days. So why do they advertise that the home defense products last a full season? Hmmmmm….


How safe are spider sprays?

Safety is a matter of both measurables and personal comfort.

Synthetic pesticides are some of the most tested products known to man. The ones we use have an acute toxicity that is rated at being much lower than the acute toxicity of caffeine or even table salt. Even before the pesticide is diluted with water. They are all tested to make sure that they are not carcinogens or mutagens and do not cause reproductive problems, etc.. Pesticides are designed to be toxic to insects – that’s what they do, that’s why they are used. The Safety Data Sheet for vinegar is way more alarming that the Safety Data Sheet for the average synthetic pesticide.

All pesticides, no matter how safe will kill bees. Bees are insects. Insecticides should never be applied to plants in bloom. Some pesticides, such as neonicotinoids, which have valid uses in pest control, should not be applied to crops. Pesticides should always be applied with care to avoid getting them into streams, lakes, and other bodies of water.

All-natural materials are preferred by many. However, some of them, especially the botanicals are more likely to cause allergic reactions and should not be used on the inside of homes around pregnant women or children under the age of six months. Other people preferring these products might want to consider having test samples of the product supplied to them to see if they have reactions prior to having the insides of their homes treated.

We recommend that applications to living areas are limited to once a year, if at all possible, with any pesticide.

Regardless of toxicity ratings, many people will have a comfort or discomfort level with pesticides, we are happy to design services that fit your needs.


Do we have poisonous spiders in the northwest?

Almost all spiders have venom. Very few spiders have really toxic venom. Black Widow spiders thrive in Eastern Washington and there are reportedly pockets of them on some of the San Juan Islands. With our weather getting warmer, they may well expand their range and become more common.

Yellow Sac spiders and Hobo spiders (a type of house spider) occur in Washington and both have been accused of causing tissue necrosis, the same type of wounds associated with the Brown Recluse spider. These spiders are not supposed to exist here.

Having said that, it is thought that most of the skin reactions that people report, and non entomologist doctors confirm, as being spiders bites – are actually caused by: allergic dermatitis, skin infections, and other pests.


How much service do you really need?

Pests are living organisms that exist in areas we don’t want them to. Some people love spiders, other people hate them. We target our services to meet your needs. We discuss your service options below.

Some customers ask specifically ask us not to harm spiders while performing our regular services for ant control, some ask to spray around their entryways as part of regular quarterly service. They don’t really dislike spiders, they just don’t like walking through their webs. Other people want us to bring flame throwers and kill all the spiders! Ha ha. No, really.

Spider extermination options – treatments designed specifically for spider control


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