Is this suitable for stoping small birds

yes it seems to stop pidgeons and pretty much everything from landing on the pergola

What's the gap between spikes for cable ties?

The gap between the base of the spikes is about 6mm. Much easier to use cable ties as although their are holes for screws that method is painful unless you use a magnetic screwdriver!!

Would decking screws be suitable for attaching the spikes to the top of a pergola and if so, what size screw would be best?

You don't need anything like a decking screw to fix these to timber etc. I used zinc plated self-tapping pozi pan head screws, size 6 x half inch, or 3.5mm x 13mm in metric. The fixing holes in the spikes are pre drilled for a number 6 or 3.5mm screw. As an alternative to zinc plated your could use brass if you wanted extract corrosion protection.

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KADAX Plastic Bird Spikes, 51 x 4 x 3 cm, Wall Spikes, Fence Tops Spikes, Pigeon Repellent, Deterrent for Birds, Cats, Anti Climb Spikes, Squirrel Repellent (6, White)

KADAX Plastic Bird Spikes, 51 x 4 x 3 cm, Wall Spikes, Fence Tops Spikes, Pigeon Repellent, Deterrent for Birds, Cats, Anti Climb Spikes, Squirrel Repellent (6, White)

Product ID: 226704199

Details

Brand
KADAX
Colour
White
Is electric
No
Item weight
80 Grams
Material
Polycarbonate
Number of pieces
6

⚙️Easy install: glue, screws, cable ties

🌦️UV & weather resistant polycarbonate

🛡️108 spikes per 52cm module

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2887832₫

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Description

🦅 Keep your space pristine—because your property deserves VIP bird-free status!

ALL WEATHER DURABILITY - Crafted from high-rigidity polycarbonate, these spikes withstand UV rays and harsh weather year-round.
EFFORTLESS INSTALLATION - Mount on concrete, metal, or wood using glue, screws, or cable ties—protection without hassle.
TRIPLE ROW SPIKE DESIGN - Two parallel rows plus a central spike row block all landing spots—no nests, no roosts, no mess.
SEAMLESS SURFACE INTEGRATION - Available in four colors to blend discreetly with your windowsills, railings, or roof edges.
UNMATCHED MULTI SPECIES DEFENSE - Effectively deters pigeons, cats, squirrels & more, safeguarding your property from unwanted guests.

KADAX Plastic Spikes are a robust, weather-resistant bird and animal deterrent system featuring 108 high-impact polycarbonate spikes per 52cm module. Designed with a unique triple-row layout, they prevent birds and small animals from landing or nesting on various surfaces. Easy to install and available in multiple colors, these spikes provide long-lasting protection against pigeons, cats, squirrels, and more, ensuring clean, damage-free outdoor spaces.

Specifications

ASIN	B0BSFLVMJK
Best Sellers Rank	53,533 in Garden ( See Top 100 in Garden ) 348 in Bird Control
Brand Name	KADAX
Colour	White
Customer Reviews	4.2 4.2 out of 5 stars (1,859)
Is Electric	No
Item Type Name	Plastic Bird Spikes
Item Weight	80 Grams
Manufacturer	KADAX
Material Type	Polycarbonate (PC)
Number of Pieces	6
Style Name	Classic
Target Species	Squirrel
Unit Count	6.0 count

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2887832₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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