Had to spray for the first time day before yesterday. Two dogs I had not seen before came from a house where I had not experienced problems in the past. I got off the bike and yelled "NO". Everytime I tried to mount the bike they moved closer. No one came out of the house to investigate the commotion so they got the spray. My aim was off so they did not get the direct stream but some of the mist as it went by. My guess is they will not remember it too well and I may have spray again next time I ride that route. I had always hesitated to buy spray for not wanting to hurt a dog but in the last two months I have been forced off the bike three times. I have been bitten before but it was several years back. Not inclined to have it happen again.