We have used the Delta ShieldSpray faucet for a week now, the faucet was pretty easy to install if  you take the time to read the directions throughly. We dont have a dishwasher so I felt this SprayShield faucet would really speed up the dish washing process and it did. The theory behind SprayShield is that it powers off the mess without making a bigger mess, no water and food sprayed all over.  All you have to do is undock your wand , and use one your three spray modes, ShieldSpray, stream, or regular spray it's nice having options and great not having a mess.