Jet washing can wash away weeds without bending or kneeling to pull them. However, the results will likely be fleeting because the weeds will return unless you use a stronger method that takes them out at the root. Use a jet washer for short-term weed removal, but use a stronger method if you want to get rid of weeds for good.

Technically, dandelions aren’t bad for your lawn, and they don’t directly kill grass. In fact, they appear in areas that are nutrient-deprived, and their long taproots can loosen the soil and bring nutrients closer to the surface. 

However, dandelions do spread quickly, and they can take over your lawn, eventually crowding out grass. This is why a healthy lawn is the best defense against dandelions.

There are a few things you should ask a weed service company before hiring to ensure you’re choosing the best professional for the job:

• How often will you apply herbicides?

• Do you include any spot treatments or manual weed removal in your pricing?

• Do you offer pet-safe and kid-safe herbicides?

• What other lawn services can you provide?

• Do you offer any kind of guarantee for the work performed?

• Are you properly licensed and fully insured?

• Do you have any customer references I could speak with?

Whether a one-time spray treatment to control mosquitoes is enough depends on multiple factors. Often, you’ll notice a big difference after one application. However, mosquitoes are likely to return if you don't reduce attractive standing water habitats. This usually takes four to eight weeks if it’s still prime mosquito season.