Lawn Supply
Lawn Grub Control | Grub B Gon MAX 1.4kg
Lawn Grub Control | Grub B Gon MAX 1.4kg
Killex Concentrated 1L - Selective Broadleaf Herbicide
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Stop grubs before they take over your lawn.
✓ Controls Japanese beetle, May/June beetle, European chafer & more
✓ Natural active ingredient
✓ Granular
✓ 1.4 kg covers up to 125 m² (1,345 sq. ft.)

Product Description
Grub B Gon MAX is a natural grub control product for Canadian lawns. It uses a natural soil bacteria called Btg SDS-502. When grubs feed on your grass roots, they eat the product, stop feeding, and are eliminated, giving your lawn a chance to recover and grow back.
Ready to use straight from the bag. Pour the granules into your spreader, spread evenly, then water in right away.
⚠️ Keep out of reach of children. Avoid skin contact during application. Always read the product label and Safety Data Sheet (SDS) before use.
Product Information
What It Controls & How It Works
Grub B Gon MAX targets beetle grubs living in your soil and destroying your grass roots from below. Grubs it controls include:
- Japanese beetle
- May or June beetles
- European chafer
- White grubs
- Asiatic garden beetle
- Green June beetle
- Northern masked chafer
- Oriental beetle
- Annual bluegrass weevil
- Black turfgrass ataenius
- Southern masked chafer
For the full list, check the product label.
How to Apply
- Pour granules into any lawn spreader.
- Spread evenly across your lawn.
- Water immediately after — about 1.25 cm of water. This pushes the product down into the soil where grubs live.
- Keep the lawn moist before and after applying for best results.
- Do not apply on very hard, compacted, or steep areas.
- Do not apply in very wet or very dry conditions — this reduces how well it works.
- Reapply as needed throughout the season.
⚠️ Keep out of reach of children. Avoid skin contact during application. Store between 4–25°C away from direct sunlight and heat. Use within 17 months of the manufacture date printed on the bag.
When to Apply Grub Control
You can apply three times a season for full protection:
🌱 Spring (April – late May): Targets grubs that survived winter and are moving up to feed on roots.
☀️ Summer (late June – early August): Targets newly hatched grubs. Apply within 2–3 weeks of peak beetle activity.
🍂 Fall (late August – September): Targets new grubs before they burrow down for winter — reducing damage next spring.
Product Specifications
Active Ingredient: Bacillus thuringiensis subsp. galleriae strain SDS-502 (Btg SDS-502)
Format: Ready-to-use granules
Coverage: 1.4 kg covers 125 m² (1,345 sq. ft.) / 3.08 kg covers 275 m² (2,960 sq. ft.)
How to Apply: Lawn spreader
How it Works: Biological control
For Use: Outdoor residential lawns
Weight: 1.4 kg (3.09 lb)
Storage: 4–25°C, away from heat and sunlight
Shelf Life: Use within 17 months of manufacture date
Made in Canada with imported parts
Registration No: PCP Act/L.P.A. No. 33460
⚠️ Not for sale in New Brunswick
Shipping Info & Delivery Times
Orders are processed within 1 business day and ship via standard ground across Canada using UPS, FedEx or Purolator. Delivered in 4–6 business days depending on your location.
⚠️ Ground shipping Available within Canada only. LawnSupply.ca ships Killex concentrate across Canada.
Our 30-Day Satisfaction Guarantee
We stand behind every product we sell. If you're not completely satisfied with Killex, contact us within 30 days of purchase for a full refund or exchange no questions asked.
To start a return, email sales@lawnsupply.ca with your order number.
Frequently Asked Questions
Frequently Asked Questions
1) Is it safe to use on my lawn?
Yes, when used as directed. Keep out of reach of children. Avoid skin contact during application. Always read the product label and Safety Data Sheet (SDS) before use.
2) When is the best time to apply grub control in Canada?
Spring (April–late May), summer (late June–early August), or fall (late August–September). Spring targets overwintering grubs. Summer targets newly hatched grubs. Fall stops grubs from surviving winter and damaging your lawn next year.
3) Where can I buy Grub B Gon MAX in Canada?
At Lawn Supply — we ship nationwide via UPS, FedEx, and Purolator. ⚠️ Not available in New Brunswick.
4) How long does it take to work?
Grubs stop feeding shortly after eating the product and are eliminated over time. Watering in right after applying speeds up how fast it works.
5) Can I use it on a newly seeded lawn?
It is designed for established lawns. If your lawn is newly seeded, check the product label before applying.
6) Do I need to water after applying?
Yes — water in right away with about 1.25 cm of water. This moves the product down into the soil where grubs live. Without watering, the product will not reach the grubs.
7) How many times a year can I apply it?
Up to 3 times — spring, summer, and fall. Most Canadian homeowners apply once in late summer when grub damage is most visible.
8) Grub B Gon MAX vs nematodes, which is better?
Both are natural options. Grub B Gon MAX is a ready-to-use granule that requires no refrigeration and works all season long. Nematodes need refrigeration, perfect timing, and heavy watering right after applying. For most homeowners, Grub B Gon MAX is the simpler choice.
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