Are there airgun silencers?

I have a crosman quest 1000x and love it. only problem is, its too loud. I like to do some pest control, you know, one shot kills for the things that make your cars and driveways a mess. but even at 25ft away, you still hear it. I was wondering if there is any airgun silencers, please dont give answers like "why would want to silence 1 haha" or something like that