How long does a 200G unit last?

Gel fresheners hold scent longer than liquid sprays since they don't evaporate as quickly. Expected lifespan depends on cabin size and ventilation, but solid gels typically outlast aerosol alternatives by several weeks.

Will this work in a small car or larger SUV equally well?

The dual-chamber design provides decent coverage for most cabins. In a larger vehicle, you might notice fresher scent near the dash and less intensity in the back — reposition it if needed or run your climate system to distribute fragrance.

Can I use this with air conditioning on full blast?

Yes. Climate control will actually help circulate the scent throughout the cabin. Just keep the unit away from direct vents that could dry it out too quickly or make the scent overwhelming.