Brush-on protection that lasts · Made in the USA · Free ground shipping on orders over $75 📞 1-800-474-5115

How to apply Repel Gel

A chip brush and twenty minutes. No licensing, no respirator, no special tools. Below is every place worth treating, with what to do, what to think about, and what to keep the gel away from.

Brushing Repel Gel along a frame rail while a mouse turns away
The basics

Four steps, every time

01

Prep the surface

Brush off loose dirt, mud or salt with a dry nylon brush or shop towel. The surface should be dry. No degreasing or pressure washing is required.

02

Pick your tool

A 2–3 inch chip brush for grommets, seams and rails; a 4-inch mini roller for belly pans and long runs; an airless or undercoating gun for fleet shops.

03

Apply a heavy coat

Lay down a thick, continuous bead or band. Around wires and pipes, build a ¼-inch collar all the way around the opening. Gaps in the barrier are where pests get through.

04

Let it set

Repel Gel is dry to the touch in about an hour and cures clear. Reseal the container and store it upright between 40°F and 90°F.

Tools

Brush, roll or spray

🖌️

Chip brush (2–3 in)

The go-to for grommets, seams, thresholds and frame rails. Gives precise control with no overspray.

🧻

Mini roller (4 in)

Fast coverage along sill plates, rim joists, belly pans and long straight runs. Use a tray and a heavy nap.

💨

Spray (shops & fleets)

Airless sprayers (0.019–0.023 in tip) or undercoating guns at 40–60 PSI for treating many units per day.

Where to apply it

8 places worth treating

Pick the one you are working on. Each opens its own guide with a photo, a walkthrough video, the steps, what to keep in mind and what to keep the gel away from.

01 Wiring harness pass-throughs Firewall grommets, floor-pan penetrations and any point where a wiring bundle passes through sheet metal or a camper subfloor. View the guide → 02 Frame rails & crossmembers The main steel rails running the length of the chassis, plus the crossmembers, outriggers and hitch tube. View the guide → 03 Belly pan seams & fasteners The corrugated plastic or sheet-metal underbelly of a camper, and every seam, screw head and overlap in it. View the guide → 04 Wheel wells, spring perches & axles Leaf-spring hangers and shackles, axle tubes, shock mounts and the inner face of each wheel well. View the guide → 05 Slide-out mechanisms Slide rails and gear tracks, hydraulic and cable arms, and the wall opening the arm passes through. View the guide → 06 Propane, battery & utility bays Battery boxes, generator compartments, propane enclosures and any exterior storage bay with a vented floor. View the guide → 07 Boats, trailers & powersports Helm and console wiring, battery boxes, engine cowlings, trailer frames and tongues, snowmobile and ATV storage. View the guide → 08 Garages, sheds & storage units Overhead-door corners and weatherstrip, side-door thresholds, sill plates, workbench bases and stored equipment. View the guide →
Technical data

Specifications

FormHigh-viscosity, thixotropic clear gel
ApplicationBrush, roller, or airless / undercoating spray
Dry to touchAbout 45–60 minutes
FinishNon-staining, dries clear
UseIndoor & outdoor
Compatible surfacesSteel, aluminum, galvanized, powder coat, PVC, coroplast, rubber, wood, concrete
Coverage1 quart treats roughly 150 sq ft of entry points; 1 gallon roughly 600 sq ft
StorageStore upright, 40°F–90°F, tightly sealed
PrecautionsKeep out of reach of children. Read the label before use.
Made inUSA
Precautions. Keep out of reach of children. Avoid contact with eyes. Do not apply to surfaces above 400°F. Read the label before use. Store upright between 40°F and 90°F and reseal tightly.
Sizing guide

How much Repel Gel do you need?

Pick what you are protecting. We estimate the entry-point area to treat and recommend a size.

  • 1 quart treats roughly 150 sq ft of entry points
  • 1 gallon treats roughly 600 sq ft and saves 25%
  • Apply a heavy, continuous bead — gaps are where pests get through
Estimated area to treat 150 sq ft Recommended 1 Quart