The shelf life of Ranger Pro Herbicide is 3-5 years from the date of purchase if kept sealed and away from extreme temperatures.
The product label for Ranger Pro Herbicide does not specify a certain amount of time but it does say that heavy rain soon after application may require a repeat application. You just want to make sure you have at least 6 hours of dry weather after you apply Ranger Pro to ensure its absorbed and not washed away, but up to 24 hours with dry weather is ideal for maximum uptake.
Glyphosate products like Ranger Pro, Round Up, etc do not stay active in the soil very long at all. You can replant after as little as two weeks after applying a glyphosate product.
Both Ranger Pro Herbicide and Roundup Pro Concentrate contain the same active ingredient, glyphosate. Roundup Pro Concentrate contains 50.2% of the active, whereas Ranger Pro contains 41% of the same active.
Ranger Pro is a nonselective herbicide, so it will kill just about anything it is applied to, including grass and weeds.
Ranger Pro can safely be applied around maple trees, but should not be applied directly to them.
Roundup Quickpro would have a faster burndown than the Ranger Pro due to having a higher percentage of glyphosate and the added diquat.