You want to get your bow tuned with brace height and nock location correct. Cat whiskers are cheap and work fine.

Granted that heavier arrows will absorb more noise, but that may not be a practical solution to your problem for one reason or another.

To get the most out of the cat whiskers or any other silencer, they should be strategically placed. With the bow strung measure the distance between points where the string touches the limb on each end.Place each silencer 1/4 of that distance from each limb touch point. For example, suppose the distance between touch points is 50 inches. Placeeach silencer 12 1/2 inches from each touch point.

There is a reason this works and it has something to do with harmonics or something. For even more silencing you can place the silencer 1/3 of the total distance away from each touch point. Personally, I think that is unnecessary if the bow is tuned.