Cat Crap Anti-Fog Treatment
This product, and others under the Cat Crap moniker, is well-known to skiers and readily available in the USA -- I bought mine from a local ski shop. Following the directions, I cleaned the inner surface of my visor and then smeared on a thin coating of the green, waxy Crap, followed by a thorough buffing with a lint-free cloth. I plopped my Arai Signet on, closed the visor and vents, and exhaled heavily several times: only very slight fogging, and that was around the edges I couldn't coat with Crap with the visor installed -- so very good anti-fog properties. While commuting to work on a dark, clear, cool (about 52F) morning, I discovered that Cat Crap was doing a good job of keeping my visor clear, but was causing a rather large "halo" around all street lights and oncoming headlights, the effect of which grew in proportion to the closing distance to the light source. On a few sharp backroad corners, I was essentially blinded for a second or two when the multi-colored halos from oncoming headlights filled large portions of my field of vision. Thus, while it is relatively easy to apply, inexpensive, fairly effective at keeping fog at bay, and small enough to carry along in a tankbag or jacket pocket (and has a cool name!), I must deem Cat Crap unacceptable for motorcycle use. I may work fine for skiiers and such, but motorcyclists can't afford any degree of reduced visual acuity, particularly in the dark. I haven't tested it in rainy daylight conditions, and frankly won't. While I expect the loss of vision wouldn't be as bad as in the dark, I'm not willing to take the chance. Bottom line: Don't buy this Crap. Hmmmm, now where's that potato?