Chameleon Hose End Spayer
Pros: Great features, like anti-backflow to keep chemicals out of your water system, ability to use different bottles, variable spray patterns, great flow trigger, adjustable fertilizer/chemical flow rate.
Cons: Instructions are poor. Do not explain that if your flow rate should be 1 OZ of fertilizer per gallon, that you set the dial to 1 OZ. Totally silent on the simple mechanics to use in setting flow rates. Whoever wrote the instructions was a brilliant engineer who probably can't run a lawn mower.