You get the windows cleaned, and a week later there’s a web across the corner of the front window again. Or you have the house sprayed for spiders, and the glass ends up streaky and dotted with old webs. Both problems usually come down to the order the jobs are done in.
Why the webs keep coming back
Spiders don’t come for your windows. They come for the insects. At night, porch lights, garage lights and lit windows draw moths and midges, and spiders build right where the food is: around the light, in the top corners of the frame and under the eaves. That’s why brushing webs away doesn’t last. The spiders are still there, and they rebuild, often overnight.
Why it matters more in the Lake Huron towns
Lake Huron produces huge numbers of insects, and on warm nights they come off the lake and head for the nearest lights. Spiders follow them. You don’t need to be on the water: the same insects reach subdivisions several kilometres inland, so homes across Sarnia, Bright’s Grove, Grand Bend, Bayfield, Goderich, Kincardine and Port Elgin all see more webs on their windows than homes further from the lake.
The order that works: remove, clean, treat
- Remove the webs first. Webs, egg sacs and spiders come off the eaves, lights and frames, ideally with a vacuum. Done after the windows are cleaned, the debris falls on fresh glass.
- Clean the windows second. Glass, frames, sills, tracks and screens with pure water, finished with RainBlock.
- Treat last, and only where it’s needed. A licensed technician treats only the dry spots where spiders shelter, never the glass that was just cleaned.
Why the order matters
- Cleaning after a treatment can wash it off the frames and sills.
- Removing webs after cleaning knocks debris back onto clean glass.
- Treating over old webs and egg sacs works less well and needs more product.
If your home has already been treated, ask your applicator how long treated areas should stay dry, and book your window clean around that.
Five ways to keep webs off your windows longer
- Change the lights. Warm or yellow outdoor bulbs draw fewer insects than bright white ones; motion sensors help too.
- Close the blinds at night. Light from inside draws insects to the glass.
- Trim plants touching the house. They give spiders a bridge to the windows.
- Stay on a schedule. Regular removal stops egg sacs hatching into next year’s spiders.
- Line up both schedules. Book the visits together, in the right order.
When to book in the season
- Spring: a window clean once the weather settles, with web removal first.
- Mid-summer: webs build fast as insects peak.
- Late summer and fall: spiders are largest and egg sacs are laid for next year. A fall removal and clean sets you up for spring.
The easiest way to get the order right: Loop and Spider Pros
Book a window cleaner and a pest company separately, and you’re the one lining up the dates. Loop and our partner Spider Pros plan our visits together: Spider Pros removes the webs, Loop cleans the windows, and Spider Pros treats last, and least. One booking. The right order. Windows that stay clear longer.
Ben Slade runs Loop Window Cleaning, a family business based in Bright's Grove that cleaned windows for more than 250 homes from Sarnia to Port Elgin in 2026. About Loop