What Is The Square Footage The MouseBlocker PROx MB34FR Will Cover?

Updated 10/08/2026 | Published 07/20/2025

Question:

what is the square footage for coverage ?

asked by: Donald M

Expert Reply:

Hi Donald!

The MouseBlocker PROx Plug In Electronic Rodent Deterrent - 110V AC # MB34FR is rated to protect up to 400 square feet. However, it is mostly intended for direct protection and not necessarily a large area. Think vehicles, trailers, and even some Class A motorhomes (depending on their size). That kind of thing.

What are you thinking about using this for? Other than keeping pesky rodents away, of course.

expert reply by: Lazer S

Lazer S.

8/15/2025

Hey Donald, Did you decide where you're going to use the MouseBlocker PROx? I'm curious if it worked well for your vehicle or trailer, as it might help others in similar situations!

Michael I.

9/30/2025

Question about working in a 30 ‘ RV. While in storage

Lazer S.

10/1/2025

@MichaelI If you are asking if the MouseBlocker PROx Plug In Electronic Rodent Deterrent - 110V AC # MB34FR will work in a 30 foot RV, most likely. However, you are kind of on the cusp of being a bit too large so I would install two of them to be safe. One in the front and one in the back. This would give you overlapping coverage and little critters would be most displeased.

Kip W.

10/8/2026

Does the blocker affect pets? Dogs & Cats?

Lazer S.

10/8/2026

@KipW Most likely, yes. This uses an intermittent pattern between 25 to 45 kHz. Cats can hear 45 Hz to 85 kHz and dogs can hear 40 Hz to 65 kHz. It won't hurt them or anything, but they will definitely stay away from wherever you put it.