First, I can't imagine any pest control service that would knowingly destroy the finish where they spray so I think you may have misunderstood what they intended on doing. The products we use in homes for pest control have changed quite a bit and currently there are some which go on "dry". My favorite is PHANTOM. It's odorless, slow acting and works great on spiders. My home has hardwood floors so anything wet is out of the question. I use the Phantom throughout and it works great. At no time can you tell anything has been applied because when used properly, you can't see it. I also use it on my boat. The boat decking is quite shiny and again, if there was ever a chance of something being left behind following the treatment, my boat would be where it could be seen. If you're wanting the best option for this problem that's both low odor and safe for use around people and pets, I'd go with this option.

Second, since you feel these weevils are in the wall, I'd apply some there too. Phantom is slow acting and won't kill anything for a few days following the initial application but this is by design. Alternatively you can go with the MOTHERS EARTH DUST in the wall void which would no doubt take them out too. The key with dusting will be making sure you get good coverage in the space. Use a HAND DUSTER to get it applied and if done right, one dose will last 6-12 months.

Lastly, you could opt to apply some HOUSEPLANT INSECT KILLER. It's organic and does not provide any residual. This means you'll have to spray over and over as new weevils appear. But this would be the "safest" option because it's not persistent or long lasting.

And don't rule out installing some WEEVIL TRAPS. These can prove helpful and are very safe since they're not a spray. Traps won't solve infestations but can help to monitor and reduce the amount active in the living area.

Here are direct links to the information and products listed above:

Phantom:  http://www.bugspraycart.com/insecticide/aerosol/pt-phantom-17-5oz

Mothers Earth Dust:  http://www.non-toxic-pest-control.com/dust/mothers-earth-diatomaceous-dust

House Plant Insect Killer:  http://www.non-toxic-pest-control.com/aerosols/houseplant-insect-killer-10-oz

Hand Duster:  http://www.bugspraycart.com/equipment/dusters/crusader

Weevil Traps:  http://www.bugspraycart.com/traps/pheromone-and-food/3pk-cf-rf-k-rw-st-pp

Thanks
J.W.

The CYPERMETHRIN listed in our CICADA KILLER CONTROL would not be the best option for this application need. Though I don't think the concentrate would be absorbed by the plant enough to pose a hazard, in general this active is not for use on plants that produce fruit or vegetables. Due to the close proximity of the treatment, I suggest opting for something else. Alternatively there are some organic or less toxic products we have which will work fine and still be safe to use around and even on the plants if needed.

The most direct approach would to wait till dark and then dust their open holes with CONCERN DE DUST. Apply it with a HAND DUSTER and you'll get instant control of any wasps in the nest when you dust. In theory you should be able to treat all the nests you have heavily enough to shut them down within minutes of the treatment.

Alternatively you could opt to spray some MULTI PURPOSE INSECT KILLER directly down their nests. If done in the evening when you know they'll be back for the night, the treatment will kill them all on contact as it's poured or sprayed down their nest. In general, if you're thorough enough the first time you treat and carefully get each burrow, you can knock them all out with one application. But if you have 5 or more nests, it will probably take a couple of treatments since they can sometimes hide well or some peripheral nests can be missed.

Here are direct links to the information and products listed above:

Cypermethrin:  http://www.bugspray.com/catalog/products/page519.html

Cicada Killer Control Article:  http://www.bugspray.com/articles99/cicadakillers.html

Concern DE Dust:  http://www.non-toxic-pest-control.com/dust/concern-diatomaceous-earth

Hand Duster:  http://www.gotosprayer.com/dusters/hand-dusters/crusader-hand-duster

Multi Purpose Insect Killer:  http://www.non-toxic-pest-control.com/concentrates/multi-purpose-insect-killer-24-oz