August marks the start of spider season, when amorous arachnids head indoors to find a mate. The recent hot weather – and concurrent heatwaves – have lead to a breeding boom and bumper spider populations as a result.
And while these insects play an important role in gardens - preying on pests like aphids and beetles, as well as providing a valuable food source for birds and amphibians - they're not always welcome guests in the home...
Scroll down for some simple (and ethical) tips and tricks on keeping spiders away.
Scare them with scents
Citrus is an effective deterrent, so wiping frames and corners with diluted lemon juice can help discourage entry, explains Emily Green, home maintenance expert at Howarth Timber.
“Peppermint oil is the most practical natural deterrent available,” adds Mosh Latifi of EcoCare Pest Management. “Spiders have taste receptors on their feet and the menthol compounds in peppermint oil are deeply unpleasant to them. Spray diluted peppermint oil along skirting boards, window sills and door frames regularly, particularly in August and September as peak season begins. White vinegar wiped along window frames and ledges has a similar deterrent effect.”
Majestic Pure Majestic Pure Peppermint Essential Oil, 118ml Candle Making Scents
Majestic Pure Majestic Pure Peppermint Essential Oil, 118ml Candle Making Scents
Mind the gap
Seal gaps around window frames, door frames, skirting boards and where pipes and cables enter the property.
Mosh advises: “It does not have to be a large gap. Spiders can squeeze through surprisingly small spaces. Check for any gaps around air bricks and consider mesh covers if spider entry is persistent.”
While Emily suggests a simple chalk barrier can also be used, as spiders are reluctant to cross powdery, alkaline surfaces.
Keep it clean
When it comes to spiders, there are no commercially registered insecticides specifically designed to deter them, explains Daniel Steward, managing director at Shield Pest Control.
He adds: “Insecticides may also be ineffective against spider egg sacs, which are often found within window reveals, underneath windowsills or in other sheltered areas.”
“One of the best ways to reduce spider activity is to physically remove webs and egg sacs using a stiff broom or handheld vacuum. Regularly removing these can help reduce the number of spiders developing and entering the room.”
Bust the myths
You may have heard that conkers are a good option for keeping spiders away – but Mosh warns against this.
"The conker myth is persistent but the evidence for it is not convincing,” he says.
“No reliable study has demonstrated that conkers repel spiders and the anecdotal reports are inconsistent. Peppermint oil is far better supported by both evidence and practical experience. I would not rely on conkers."
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