Is pressure washing safe for plants and pets?

Pressure washing and soft washing can be done with low risk to your plants and pets, but only with the right precautions. Plants should be soaked with plain water before cleaning starts and rinsed again afterward, and pets should stay indoors during the work and until the surfaces are dry. No method is completely risk-free, so it is worth knowing what the real concerns are and how they are handled.

What can actually harm plants

There are two separate risks, and they come from different parts of the job.

The cleaning solution. Soft washing siding and roofs uses a cleaning solution that kills algae, mildew and lichen. Many of these solutions are bleach-based. Undiluted, that can scorch leaves and stress roots. The main danger is runoff dripping off a roof or wall onto the beds below, especially on dry, thirsty plants that soak it straight up.

The water itself. High pressure aimed carelessly can strip leaves, break stems, and blast mulch and soil out of beds. That is mostly a risk with driveways and walkways, where the beds sit right at the edge of the concrete.

How plants are protected

The standard approach is simple and it works because of how plants take up water.

• Pre-wet everything nearby. A plant that is already full of plain water absorbs much less of anything else. Grass, shrubs and flower beds near the work area get soaked first.
• Cover sensitive plants where needed. Delicate plants directly under a roofline can be covered during a roof wash.
• Keep the solution where it belongs. Low pressure means less overspray and mist drifting into the yard.
• Rinse again after. Once the cleaning is finished, the plants are rinsed a second time to dilute anything that landed on them.

At Sebastian’s Washing Services, pre-wetting and rinsing plants is part of every job, and on roof cleaning we cover sensitive plants where needed. You can see where that fits in the process on our roof cleaning page.

What you can do

• Water your beds well the evening before if the weather has been dry. Hydrated plants handle the day better.
• Point out anything special. Vegetable gardens, prized roses, young trees, a koi pond or a bird bath are all worth mentioning when you book.
• Watch the next week. A very sensitive plant can occasionally show some browning at the leaf edges. If anything looks off, let your cleaning company know.

Around The Woodlands, many homes have beds packed tight against the foundation under azaleas, ferns and shade plants. Those sit right in the drip line, so they deserve the most attention.

What about pets

Pets are a different question, because the concern is contact, not absorption.

• Keep pets inside during the work. That keeps them away from hoses, equipment and spray, and out of the way of the crew. Close the pet door if you have one.
• Keep them inside until surfaces dry. Wet siding, decks and concrete may have traces of cleaning solution on them until they are rinsed and dry. Paws pick it up, and dogs and cats lick their paws.
• Watch for puddles. Do not let pets drink from puddles or runoff in the yard after a cleaning.
• Bring in bowls, beds and toys from the patio before work starts, or let us know they are there.
• Check the gate. A crew working along a fence line may need to open a gate. Make sure your dog is not in that part of the yard.

In our humid weather, drying can take longer than you expect, especially on shaded decks and patios. Give it time, and walk the surface yourself before letting pets back out.

Fish ponds and other animals

Outdoor fish ponds, chicken coops and bird feeders near the house are worth mentioning ahead of time so they can be covered or worked around. Fish are especially sensitive to anything that washes into their water.

Questions worth asking before you hire anyone

• How do you protect my plants, and do you rinse them afterward?
• What pressure do you use on my siding and roof?
• Do I need to keep my pets inside, and for how long?
• Are you insured?

A company that answers these plainly is a company that has thought about them.

The honest answer

With plants pre-wet and rinsed, sensitive areas covered, and pets kept inside until everything is dry, the risk to your yard and animals is low. It is not zero, so tell your cleaner about anything special in the yard and keep an eye on things for a few days after.

Sebastian’s Washing Services offers free quotes across The Woodlands area for house, roof, driveway and deck cleaning. Call or email, tell us about your yard and your pets, and we will plan the job around them.