Rust Cleanze is a biodegradable, non-acid rust treatment that is highly effective for removing rust stains from relatively delicate surfaces such as concrete, limestone and sandstone without significantly whitening the surface.

You'll find it particularly useful for rust stains caused by iron sulphate lawn fertiliser and moss killer, on paths and patios, garden furniture, walls, BBQ's, play equipment, etc.

Coverage rates

The area that Rust Cleanze will cover depends on the porosity of the surface you are treating. The following coverage rates are an approximate guide:

• Concrete: 1-5m² per litre
• Natural stone: 1.5-5m² per litre
• Granite: 8-15m² per litre
• Block paving: 4-7m² per litre

You can thin Rust Cleanze up to 1:1 with water when using it to remove stains on surfaces only recently contaminated with a weak solution of iron sulphate fertiliser. For most other applications, use neat.

How to apply Rust Cleanze

1. Pour a sufficient amount of product into a container, e.g. a paint tray.
2. Apply using a brush, allowing 2-3 minutes for activation before lightly brushing Rust Cleanze into the surface.
3. Leave to activate for 2-3 minutes before lightly brushing again.
4. Repeat the brush and activation cycle up to three times.

IMPORTANT: Allow  Rust Cleanze to activate for a maximum of 10 minutes

Rinsing

1. Rinse the surface with tap water.
2. You may need to rinse multiple times to allow the product to leach from a porous surface.
3. Do not allow Rust Cleanze to dry, and prevent drying by lightly spraying with water.

Quick tips

• Always treat a small test patch in an inconspicuous area before use and clear spills immediately.
• For very severe staining, you may need to repeat the above process multiple times.
• Some light discolouration or whitening may occur on some coloured concrete and render.

Purple colouring: Rust Cleanze will turn purple on contact with rust and rust stains. This is normal and will disappear after rinsing. If Rust Cleanze does not turn purple then it's probably not a rust stain and you should use an alternative stain removal product.

If the surface will not be damaged by abrasive scouring pads, or stainless/brass/plastic wire brushes, then a light brushing to remove a heavy crust of rust can be beneficial.