A spray with water every week or so should dissuade them.

tj

mh, the Bayers product IS renowned for creating population explosions in pests....most notably spider mites.

I have to respectfully disagree that a weekly spray of water will control mites on your roses. Recommended treatments include insecticidal soap......the REAL STUFF....and horticultural oil. Application of anything, including water, needs to be directed to the underside of the foliage where mites like to hang out.

Be sure to read, understand, and follow the label directions.

Some research has found that the systemic pesticides are very harmful to our pollinators and most all of the pesticides are very broad spectrum and kill off the beneficials that can help control the few pests.
Understanding the life cycle of Spider Mites more than likely can help keep them under control. Note in the attached article where it states that Spider Mites often become more of a problem after spraying for them.

Here is a link that might be useful: About Spider Mites

Thanks for the good link, kimmsr. It recommends water, insecticidal soaps, and oils. I'd go for the water first of all.

As I recall daily misting to help raise the humidity level around the plant. Once a week is not going to help when the weather is hot and dry.

Thanks everyone. Ill break out the neem oil. ugh i just hate spraying!

My beneficials don't seem bothered by Bayer tree and shrub. I've got lots of lady bugs and red orange assassins and little wasp flies. I only use it when I've got a real problem pest to deal with, however.

The humidity will kick in soon. I'm in south Louisiana, so rarely are we lacking humidity ;)

bmh4796,
"In gardens and on small fruit trees, regular, forceful spraying of plants with water often will reduce spider mite numbers adequately. Be sure to get good coverage, especially on the undersides of leaves. If more control is required, use an insecticidal soap or oil in your spray, but test the product on one or two plants to be sure it isnâÂÂt damaging to them. (See Chemical Control below.)"
Source.